47442664 has 8 divisors (see below), whose sum is σ = 88955010. Its totient is φ = 23721328.

The previous prime is 47442649. The next prime is 47442673. The reversal of 47442664 is 46624474.

It can be written as a sum of positive squares in only one way, i.e., 45454564 + 1988100 = 6742^2 + 1410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2965159 + ... + 2965174.

Almost surely, 2^47442664 is an apocalyptic number.

It is an amenable number.

47442664 is a deficient number, since it is larger than the sum of its proper divisors (41512346).

47442664 is a wasteful number, since it uses less digits than its factorization.

47442664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5930339 (or 5930335 counting only the distinct ones).

The product of its digits is 129024, while the sum is 37.

The square root of 47442664 is about 6887.8635294262. The cubic root of 47442664 is about 362.0120464434.

The spelling of 47442664 in words is "forty-seven million, four hundred forty-two thousand, six hundred sixty-four".