69390139 has 8 divisors (see below), whose sum is σ = 85403360. Its totient is φ = 54902016.

The previous prime is 69390137. The next prime is 69390143. The reversal of 69390139 is 93109396.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69390139 - 2¹ = 69390137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69390137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381174 + ... + 381355.

It is an arithmetic number, because the mean of its divisors is an integer number (10675420).

Almost surely, 2^69390139 is an apocalyptic number.

69390139 is a deficient number, since it is larger than the sum of its proper divisors (16013221).

69390139 is a wasteful number, since it uses less digits than its factorization.

69390139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762549.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 69390139 is about 8330.0743694159. The cubic root of 69390139 is about 410.9281747868.

The spelling of 69390139 in words is "sixty-nine million, three hundred ninety thousand, one hundred thirty-nine".