69001391 has 2 divisors, whose sum is σ = 69001392. Its totient is φ = 69001390.

The previous prime is 69001367. The next prime is 69001393. The reversal of 69001391 is 19310096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69001391 - 2²² = 64807087 is a prime.

It is a super-2 number, since 2×69001391² = 9522383919869762, which contains 22 as substring.

Together with 69001393, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_4062755 and since 69001391 and 4062755 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69001393) 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, 34500695 + 34500696.

It is an arithmetic number, because the mean of its divisors is an integer number (34500696).

Almost surely, 2^69001391 is an apocalyptic number.

69001391 is a deficient number, since it is larger than the sum of its proper divisors (1).

69001391 is an equidigital number, since it uses as much as digits as its factorization.

69001391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 69001391 is about 8306.7075908569. The cubic root of 69001391 is about 410.1593491248.

The spelling of 69001391 in words is "sixty-nine million, one thousand, three hundred ninety-one".