390817488 has 40 divisors (see below), whose sum is σ = 1069003008. Its totient is φ = 122609152.

The previous prime is 390817487. The next prime is 390817489. The reversal of 390817488 is 884718093.

It is an interprime number because it is at equal distance from previous prime (390817487) and next prime (390817489).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390817487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238656 + ... + 240287.

Almost surely, 2^390817488 is an apocalyptic number.

It is an amenable number.

390817488 is an abundant number, since it is smaller than the sum of its proper divisors (678185520).

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

390817488 is a wasteful number, since it uses less digits than its factorization.

390817488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478971 (or 478965 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 390817488 is about 19769.1043803203. The cubic root of 390817488 is about 731.1244870123.

It can be divided in two parts, 39081 and 7488, that multiplied together give a triangular number (292638528 = T₂₄₁₉₂).

The spelling of 390817488 in words is "three hundred ninety million, eight hundred seventeen thousand, four hundred eighty-eight".