396269940 has 96 divisors (see below), whose sum is σ = 1238662656. Its totient is φ = 93824640.

The previous prime is 396269933. The next prime is 396269941. The reversal of 396269940 is 49962693.

It is a super-4 number, since 4×396269940⁴ (a number of 35 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 396269940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396269941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21399 + ... + 35361.

It is an arithmetic number, because the mean of its divisors is an integer number (12902736).

Almost surely, 2^396269940 is an apocalyptic number.

396269940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396269940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619331328).

396269940 is an abundant number, since it is smaller than the sum of its proper divisors (842392716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396269940 is a wasteful number, since it uses less digits than its factorization.

396269940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14029 (or 14027 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 396269940 is about 19906.5300843718. The cubic root of 396269940 is about 734.5088671369.

The spelling of 396269940 in words is "three hundred ninety-six million, two hundred sixty-nine thousand, nine hundred forty".