390706896 has 80 divisors (see below), whose sum is σ = 1028059200. Its totient is φ = 127841280.

The previous prime is 390706889. The next prime is 390706907. The reversal of 390706896 is 698607093.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119330 + ... + 1119678.

It is an arithmetic number, because the mean of its divisors is an integer number (12850740).

Almost surely, 2^390706896 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 390706896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514029600).

390706896 is an abundant number, since it is smaller than the sum of its proper divisors (637352304).

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

390706896 is a wasteful number, since it uses less digits than its factorization.

390706896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 390706896 is about 19766.3070906024. The cubic root of 390706896 is about 731.0555169263.

The spelling of 390706896 in words is "three hundred ninety million, seven hundred six thousand, eight hundred ninety-six".