654990039 has 24 divisors (see below), whose sum is σ = 1032934032. Its totient is φ = 396645120.

The previous prime is 654990023. The next prime is 654990043. The reversal of 654990039 is 930099456.

It is a happy number.

It is not a de Polignac number, because 654990039 - 2⁴ = 654990023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 654989976 and 654990003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654990079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196047 + ... + 199359.

It is an arithmetic number, because the mean of its divisors is an integer number (43038918).

Almost surely, 2^654990039 is an apocalyptic number.

654990039 is a deficient number, since it is larger than the sum of its proper divisors (377943993).

654990039 is a wasteful number, since it uses less digits than its factorization.

654990039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327 (or 5324 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 654990039 is about 25592.7731791613. The cubic root of 654990039 is about 868.4501578698.

The spelling of 654990039 in words is "six hundred fifty-four million, nine hundred ninety thousand, thirty-nine".