47938149 has 40 divisors (see below), whose sum is σ = 83286720. Its totient is φ = 26910144.

The previous prime is 47938139. The next prime is 47938193. The reversal of 47938149 is 94183974.

47938149 is a `hidden beast` number, since 479 + 38 + 149 = 666.

It is not a de Polignac number, because 47938149 - 2⁴ = 47938133 is a prime.

It is a super-2 number, since 2×47938149² = 4596132259092402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47938109) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32737 + ... + 34169.

It is an arithmetic number, because the mean of its divisors is an integer number (2082168).

Almost surely, 2^47938149 is an apocalyptic number.

It is an amenable number.

47938149 is a deficient number, since it is larger than the sum of its proper divisors (35348571).

47938149 is a wasteful number, since it uses less digits than its factorization.

47938149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1502 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 47938149 is about 6923.7380799681. The cubic root of 47938149 is about 363.2679532407.

The spelling of 47938149 in words is "forty-seven million, nine hundred thirty-eight thousand, one hundred forty-nine".