390003960 has 96 divisors (see below), whose sum is σ = 1191687120. Its totient is φ = 102090240.

The previous prime is 390003949. The next prime is 390004003. The reversal of 390003960 is 69300093.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1848255 + ... + 1848465.

Almost surely, 2^390003960 is an apocalyptic number.

390003960 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 390003960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595843560).

390003960 is an abundant number, since it is smaller than the sum of its proper divisors (801683160).

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

390003960 is a wasteful number, since it uses less digits than its factorization.

390003960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 390003960 is about 19748.5179190743. The cubic root of 390003960 is about 730.6168302465.

The spelling of 390003960 in words is "three hundred ninety million, three thousand, nine hundred sixty".