47380917 has 4 divisors (see below), whose sum is σ = 63174560. Its totient is φ = 31587276.

The previous prime is 47380903. The next prime is 47380937. The reversal of 47380917 is 71908374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47380917 - 2¹¹ = 47378869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47380937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7896817 + ... + 7896822.

It is an arithmetic number, because the mean of its divisors is an integer number (15793640).

Almost surely, 2^47380917 is an apocalyptic number.

It is an amenable number.

47380917 is a deficient number, since it is larger than the sum of its proper divisors (15793643).

47380917 is a wasteful number, since it uses less digits than its factorization.

47380917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15793642.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 47380917 is about 6883.3797657837. The cubic root of 47380917 is about 361.8549244175.

The spelling of 47380917 in words is "forty-seven million, three hundred eighty thousand, nine hundred seventeen".