64400092 has 12 divisors (see below), whose sum is σ = 117600336. Its totient is φ = 30800000.

The previous prime is 64400087. The next prime is 64400107. The reversal of 64400092 is 29000446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349909 + ... + 350092.

It is an arithmetic number, because the mean of its divisors is an integer number (9800028).

Almost surely, 2^64400092 is an apocalyptic number.

It is an amenable number.

64400092 is a deficient number, since it is larger than the sum of its proper divisors (53200244).

64400092 is a wasteful number, since it uses less digits than its factorization.

64400092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700028 (or 700026 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 64400092 is about 8024.9667912085. The cubic root of 64400092 is about 400.8317940975.

The spelling of 64400092 in words is "sixty-four million, four hundred thousand, ninety-two".