390469760 has 128 divisors (see below), whose sum is σ = 993643200. Its totient is φ = 146313216.

The previous prime is 390469759. The next prime is 390469801. The reversal of 390469760 is 67964093.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 1981982 + ... + 1982178.

Almost surely, 2^390469760 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 390469760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496821600).

390469760 is an abundant number, since it is smaller than the sum of its proper divisors (603173440).

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

390469760 is a wasteful number, since it uses less digits than its factorization.

390469760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 390469760 is about 19760.3076899121. The cubic root of 390469760 is about 730.9075844926.

The spelling of 390469760 in words is "three hundred ninety million, four hundred sixty-nine thousand, seven hundred sixty".