69880139 has 8 divisors (see below), whose sum is σ = 79984128. Its totient is φ = 59806440.

The previous prime is 69880133. The next prime is 69880147. The reversal of 69880139 is 93108896.

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

It is a cyclic number.

It is not a de Polignac number, because 69880139 - 2¹² = 69876043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69880139.

It is not an unprimeable number, because it can be changed into a prime (69880133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2387 + ... + 12060.

It is an arithmetic number, because the mean of its divisors is an integer number (9998016).

Almost surely, 2^69880139 is an apocalyptic number.

69880139 is a deficient number, since it is larger than the sum of its proper divisors (10103989).

69880139 is a wasteful number, since it uses less digits than its factorization.

69880139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15145.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 69880139 is about 8359.4341315666. The cubic root of 69880139 is about 411.8931663647.

The spelling of 69880139 in words is "sixty-nine million, eight hundred eighty thousand, one hundred thirty-nine".