69880939 has 4 divisors (see below), whose sum is σ = 70079256. Its totient is φ = 69682624.

The previous prime is 69880919. The next prime is 69880949. The reversal of 69880939 is 93908896.

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 69880939 - 2²¹ = 67783787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69880919) 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, 98629 + ... + 99334.

It is an arithmetic number, because the mean of its divisors is an integer number (17519814).

Almost surely, 2^69880939 is an apocalyptic number.

69880939 is a deficient number, since it is larger than the sum of its proper divisors (198317).

69880939 is a wasteful number, since it uses less digits than its factorization.

69880939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198316.

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

The square root of 69880939 is about 8359.4819815584. The cubic root of 69880939 is about 411.8947381669.

The spelling of 69880939 in words is "sixty-nine million, eight hundred eighty thousand, nine hundred thirty-nine".