69995479 has 4 divisors (see below), whose sum is σ = 70350984. Its totient is φ = 69639976.

The previous prime is 69995461. The next prime is 69995483. The reversal of 69995479 is 97459996.

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 69995479 - 2²³ = 61606871 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 (69998479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177457 + ... + 177850.

It is an arithmetic number, because the mean of its divisors is an integer number (17587746).

Almost surely, 2^69995479 is an apocalyptic number.

69995479 is a deficient number, since it is larger than the sum of its proper divisors (355505).

69995479 is a wasteful number, since it uses less digits than its factorization.

69995479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355504.

The product of its digits is 5511240, while the sum is 58.

The square root of 69995479 is about 8366.3300795510. The cubic root of 69995479 is about 412.1196572513.

The spelling of 69995479 in words is "sixty-nine million, nine hundred ninety-five thousand, four hundred seventy-nine".