47149388 has 48 divisors (see below), whose sum is σ = 100101120. Its totient is φ = 19137600.

The previous prime is 47149387. The next prime is 47149391. The reversal of 47149388 is 88394174.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (47149387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16403 + ... + 19061.

It is an arithmetic number, because the mean of its divisors is an integer number (2085440).

Almost surely, 2^47149388 is an apocalyptic number.

It is an amenable number.

47149388 is an abundant number, since it is smaller than the sum of its proper divisors (52951732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47149388 is a wasteful number, since it uses less digits than its factorization.

47149388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718 (or 2716 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 47149388 is about 6866.5411962647. The cubic root of 47149388 is about 361.2645549146.

The spelling of 47149388 in words is "forty-seven million, one hundred forty-nine thousand, three hundred eighty-eight".