47379817 has 4 divisors (see below), whose sum is σ = 47400516. Its totient is φ = 47359120.

The previous prime is 47379809. The next prime is 47379821. The reversal of 47379817 is 71897374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43283241 + 4096576 = 6579^2 + 2024^2 .

It is a cyclic number.

It is not a de Polignac number, because 47379817 - 2³ = 47379809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47376817) 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, 6418 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (11850129).

Almost surely, 2^47379817 is an apocalyptic number.

It is an amenable number.

47379817 is a deficient number, since it is larger than the sum of its proper divisors (20699).

47379817 is a wasteful number, since it uses less digits than its factorization.

47379817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20698.

The product of its digits is 296352, while the sum is 46.

The square root of 47379817 is about 6883.2998627112. The cubic root of 47379817 is about 361.8521241094.

The spelling of 47379817 in words is "forty-seven million, three hundred seventy-nine thousand, eight hundred seventeen".