64452399 has 32 divisors (see below), whose sum is σ = 97853184. Its totient is φ = 37390080.

The previous prime is 64452383. The next prime is 64452403. The reversal of 64452399 is 99325446.

It is not a de Polignac number, because 64452399 - 2⁴ = 64452383 is a prime.

It is a super-2 number, since 2×64452399² = 8308223473710402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64452399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64452359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74779 + ... + 75635.

It is an arithmetic number, because the mean of its divisors is an integer number (3057912).

Almost surely, 2^64452399 is an apocalyptic number.

64452399 is a deficient number, since it is larger than the sum of its proper divisors (33400785).

64452399 is a wasteful number, since it uses less digits than its factorization.

64452399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967.

The product of its digits is 233280, while the sum is 42.

The square root of 64452399 is about 8028.2251463197. The cubic root of 64452399 is about 400.9402858410.

The spelling of 64452399 in words is "sixty-four million, four hundred fifty-two thousand, three hundred ninety-nine".