390984501 has 4 divisors (see below), whose sum is σ = 521312672. Its totient is φ = 260656332.

The previous prime is 390984499. The next prime is 390984511. The reversal of 390984501 is 105489093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 105489093 = 3 ⋅35163031.

It is not a de Polignac number, because 390984501 - 2¹ = 390984499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 390984501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390984511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65164081 + ... + 65164086.

It is an arithmetic number, because the mean of its divisors is an integer number (130328168).

Almost surely, 2^390984501 is an apocalyptic number.

It is an amenable number.

390984501 is a deficient number, since it is larger than the sum of its proper divisors (130328171).

390984501 is a wasteful number, since it uses less digits than its factorization.

390984501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130328170.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 390984501 is about 19773.3280203409. The cubic root of 390984501 is about 731.2286190841.

It can be divided in two parts, 3909 and 84501, that added together give a triangular number (88410 = T₄₂₀).

The spelling of 390984501 in words is "three hundred ninety million, nine hundred eighty-four thousand, five hundred one".