390106539 has 6 divisors (see below), whose sum is σ = 563487236. Its totient is φ = 260071020.

The previous prime is 390106517. The next prime is 390106547. The reversal of 390106539 is 935601093.

It is not a de Polignac number, because 390106539 - 2⁷ = 390106411 is a prime.

It is a super-2 number, since 2×390106539² = 304366223541117042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390106559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21672577 + ... + 21672594.

Almost surely, 2^390106539 is an apocalyptic number.

390106539 is a deficient number, since it is larger than the sum of its proper divisors (173380697).

390106539 is a wasteful number, since it uses less digits than its factorization.

390106539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43345177 (or 43345174 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 390106539 is about 19751.1148799251. The cubic root of 390106539 is about 730.6808803432.

It can be divided in two parts, 390 and 106539, that added together give a square (106929 = 327²).

The spelling of 390106539 in words is "three hundred ninety million, one hundred six thousand, five hundred thirty-nine".