69891413 has 2 divisors, whose sum is σ = 69891414. Its totient is φ = 69891412.

The previous prime is 69891389. The next prime is 69891427. The reversal of 69891413 is 31419896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45468049 + 24423364 = 6743^2 + 4942^2 .

It is a cyclic number.

It is not a de Polignac number, because 69891413 - 2¹⁸ = 69629269 is a prime.

It is a super-2 number, since 2×69891413² = 9769619222273138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69891013) 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 as a sum of consecutive naturals, namely, 34945706 + 34945707.

It is an arithmetic number, because the mean of its divisors is an integer number (34945707).

Almost surely, 2^69891413 is an apocalyptic number.

It is an amenable number.

69891413 is a deficient number, since it is larger than the sum of its proper divisors (1).

69891413 is an equidigital number, since it uses as much as digits as its factorization.

69891413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 69891413 is about 8360.1084323112. The cubic root of 69891413 is about 411.9153158811.

The spelling of 69891413 in words is "sixty-nine million, eight hundred ninety-one thousand, four hundred thirteen".