69013139 has 4 divisors (see below), whose sum is σ = 74321856. Its totient is φ = 63704424.

The previous prime is 69013121. The next prime is 69013163. The reversal of 69013139 is 93131096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69013139 - 2¹² = 69009043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69013039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654339 + ... + 2654364.

It is an arithmetic number, because the mean of its divisors is an integer number (18580464).

Almost surely, 2^69013139 is an apocalyptic number.

69013139 is a deficient number, since it is larger than the sum of its proper divisors (5308717).

69013139 is a wasteful number, since it uses less digits than its factorization.

69013139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5308716.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 69013139 is about 8307.4147001339. The cubic root of 69013139 is about 410.1826253637.

The spelling of 69013139 in words is "sixty-nine million, thirteen thousand, one hundred thirty-nine".