47909157 has 8 divisors (see below), whose sum is σ = 63917280. Its totient is φ = 31920240.

The previous prime is 47909137. The next prime is 47909201. The reversal of 47909157 is 75190974.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47909157 - 2⁸ = 47908901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47909107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2694 + ... + 10152.

It is an arithmetic number, because the mean of its divisors is an integer number (7989660).

Almost surely, 2^47909157 is an apocalyptic number.

It is an amenable number.

47909157 is a deficient number, since it is larger than the sum of its proper divisors (16008123).

47909157 is a wasteful number, since it uses less digits than its factorization.

47909157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 47909157 is about 6921.6440966002. The cubic root of 47909157 is about 363.1947061603.

The spelling of 47909157 in words is "forty-seven million, nine hundred nine thousand, one hundred fifty-seven".