396012864 has 112 divisors (see below), whose sum is σ = 1167505920. Its totient is φ = 117626880.

The previous prime is 396012863. The next prime is 396012917. The reversal of 396012864 is 468210693.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396012863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69649 + ... + 75119.

It is an arithmetic number, because the mean of its divisors is an integer number (10424160).

Almost surely, 2^396012864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396012864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583752960).

396012864 is an abundant number, since it is smaller than the sum of its proper divisors (771493056).

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

396012864 is a wasteful number, since it uses less digits than its factorization.

396012864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528 (or 5518 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 396012864 is about 19900.0719596689. The cubic root of 396012864 is about 734.3499977823.

The spelling of 396012864 in words is "three hundred ninety-six million, twelve thousand, eight hundred sixty-four".