390414639 has 16 divisors (see below), whose sum is σ = 566072928. Its totient is φ = 238344192.

The previous prime is 390414601. The next prime is 390414649. The reversal of 390414639 is 936414093.

It is not a de Polignac number, because 390414639 - 2⁹ = 390414127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390414597 and 390414606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390414649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101562 + ... + 105335.

It is an arithmetic number, because the mean of its divisors is an integer number (35379558).

Almost surely, 2^390414639 is an apocalyptic number.

390414639 is a deficient number, since it is larger than the sum of its proper divisors (175658289).

390414639 is a wasteful number, since it uses less digits than its factorization.

390414639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206954.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 390414639 is about 19758.9129002585. The cubic root of 390414639 is about 730.8731898079.

The spelling of 390414639 in words is "three hundred ninety million, four hundred fourteen thousand, six hundred thirty-nine".