69888413 has 4 divisors (see below), whose sum is σ = 79872480. Its totient is φ = 59904348.

The previous prime is 69888409. The next prime is 69888451. The reversal of 69888413 is 31488896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 69888413 - 2² = 69888409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69888473) 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, 4992023 + ... + 4992036.

It is an arithmetic number, because the mean of its divisors is an integer number (19968120).

Almost surely, 2^69888413 is an apocalyptic number.

It is an amenable number.

69888413 is a deficient number, since it is larger than the sum of its proper divisors (9984067).

69888413 is an equidigital number, since it uses as much as digits as its factorization.

69888413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9984066.

The product of its digits is 331776, while the sum is 47.

The square root of 69888413 is about 8359.9290068756. The cubic root of 69888413 is about 411.9094221498.

The spelling of 69888413 in words is "sixty-nine million, eight hundred eighty-eight thousand, four hundred thirteen".