69988039 has 16 divisors (see below), whose sum is σ = 80743680. Its totient is φ = 59996160.

The previous prime is 69988033. The next prime is 69988081. The reversal of 69988039 is 93088996.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69988039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69988033) 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, 53062 + ... + 54364.

It is an arithmetic number, because the mean of its divisors is an integer number (5046480).

Almost surely, 2^69988039 is an apocalyptic number.

69988039 is a deficient number, since it is larger than the sum of its proper divisors (10755641).

69988039 is a wasteful number, since it uses less digits than its factorization.

69988039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 69988039 is about 8365.8854283333. The cubic root of 69988039 is about 412.1050549802.

The spelling of 69988039 in words is "sixty-nine million, nine hundred eighty-eight thousand, thirty-nine".