47993855 has 32 divisors (see below), whose sum is σ = 71320704. Its totient is φ = 30191616.

The previous prime is 47993819. The next prime is 47993857. The reversal of 47993855 is 55839974.

It is not a de Polignac number, because 47993855 - 2⁸ = 47993599 is a prime.

It is a super-2 number, since 2×47993855² = 4606820235522050, which contains 22 as substring.

Its product of digits (1360800) is a multiple of the sum of its prime divisors (675).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47993857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142247 + ... + 142583.

It is an arithmetic number, because the mean of its divisors is an integer number (2228772).

Almost surely, 2^47993855 is an apocalyptic number.

47993855 is a deficient number, since it is larger than the sum of its proper divisors (23326849).

47993855 is a wasteful number, since it uses less digits than its factorization.

47993855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its digits is 1360800, while the sum is 50.

The square root of 47993855 is about 6927.7597389055. The cubic root of 47993855 is about 363.4086092851.

The spelling of 47993855 in words is "forty-seven million, nine hundred ninety-three thousand, eight hundred fifty-five".