64394458 has 12 divisors (see below), whose sum is σ = 101944170. Its totient is φ = 30502296.

The previous prime is 64394441. The next prime is 64394459. The reversal of 64394458 is 85449346.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62773929 + 1620529 = 7923^2 + 1273^2 .

It is a super-2 number, since 2×64394458² = 8293292442227528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64394459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43873 + ... + 45316.

Almost surely, 2^64394458 is an apocalyptic number.

64394458 is a deficient number, since it is larger than the sum of its proper divisors (37549712).

64394458 is a wasteful number, since it uses less digits than its factorization.

64394458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89229 (or 89210 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 64394458 is about 8024.6157540408. The cubic root of 64394458 is about 400.8201049207.

The spelling of 64394458 in words is "sixty-four million, three hundred ninety-four thousand, four hundred fifty-eight".