64051399 has 2 divisors, whose sum is σ = 64051400. Its totient is φ = 64051398.

The previous prime is 64051367. The next prime is 64051411. The reversal of 64051399 is 99315046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64051399 - 2⁵ = 64051367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64051319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32025699 + 32025700.

It is an arithmetic number, because the mean of its divisors is an integer number (32025700).

Almost surely, 2^64051399 is an apocalyptic number.

64051399 is a deficient number, since it is larger than the sum of its proper divisors (1).

64051399 is an equidigital number, since it uses as much as digits as its factorization.

64051399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 64051399 is about 8003.2117927742. The cubic root of 64051399 is about 400.1070525968.

The spelling of 64051399 in words is "sixty-four million, fifty-one thousand, three hundred ninety-nine".