47907391 has 8 divisors (see below), whose sum is σ = 56639520. Its totient is φ = 39647328.

The previous prime is 47907383. The next prime is 47907403. The reversal of 47907391 is 19370974.

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

It is not a de Polignac number, because 47907391 - 2³ = 47907383 is a prime.

It is a super-2 number, since 2×47907391² = 4590236224853762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47907331) 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, 117796 + ... + 118201.

It is an arithmetic number, because the mean of its divisors is an integer number (7079940).

Almost surely, 2^47907391 is an apocalyptic number.

47907391 is a deficient number, since it is larger than the sum of its proper divisors (8732129).

47907391 is a wasteful number, since it uses less digits than its factorization.

47907391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236033.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 47907391 is about 6921.5165245775. The cubic root of 47907391 is about 363.1902434801.

The spelling of 47907391 in words is "forty-seven million, nine hundred seven thousand, three hundred ninety-one".