47393408 has 16 divisors (see below), whose sum is σ = 94416810. Its totient is φ = 23696640.

The previous prime is 47393407. The next prime is 47393441. The reversal of 47393408 is 80439374.

It can be written as a sum of positive squares in only one way, i.e., 27962944 + 19430464 = 5288^2 + 4408^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×47393408² = 4492270243708928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47393407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185003 + ... + 185258.

Almost surely, 2^47393408 is an apocalyptic number.

It is an amenable number.

47393408 is a deficient number, since it is larger than the sum of its proper divisors (47023402).

47393408 is an equidigital number, since it uses as much as digits as its factorization.

47393408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370275 (or 370263 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 47393408 is about 6884.2870364330. The cubic root of 47393408 is about 361.8867201488.

The spelling of 47393408 in words is "forty-seven million, three hundred ninety-three thousand, four hundred eight".