47149977 has 64 divisors (see below), whose sum is σ = 80216064. Its totient is φ = 24045120.

The previous prime is 47149967. The next prime is 47149987. The reversal of 47149977 is 77994174.

It is an interprime number because it is at equal distance from previous prime (47149967) and next prime (47149987).

It is not a de Polignac number, because 47149977 - 2¹⁰ = 47148953 is a prime.

It is a super-2 number, since 2×47149977² = 4446240662201058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47149937) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 703698 + ... + 703764.

It is an arithmetic number, because the mean of its divisors is an integer number (1253376).

Almost surely, 2^47149977 is an apocalyptic number.

47149977 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

47149977 is a deficient number, since it is larger than the sum of its proper divisors (33066087).

47149977 is a wasteful number, since it uses less digits than its factorization.

47149977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178.

The product of its digits is 444528, while the sum is 48.

The square root of 47149977 is about 6866.5840852639. The cubic root of 47149977 is about 361.2660592391.

The spelling of 47149977 in words is "forty-seven million, one hundred forty-nine thousand, nine hundred seventy-seven".