47099431 has 4 divisors (see below), whose sum is σ = 47565864. Its totient is φ = 46633000.

The previous prime is 47099413. The next prime is 47099441. The reversal of 47099431 is 13499074.

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

It is a cyclic number.

It is not a de Polignac number, because 47099431 - 2⁵ = 47099399 is a prime.

It is a super-2 number, since 2×47099431² = 4436712801047522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47099441) 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, 233065 + ... + 233266.

It is an arithmetic number, because the mean of its divisors is an integer number (11891466).

Almost surely, 2^47099431 is an apocalyptic number.

47099431 is a deficient number, since it is larger than the sum of its proper divisors (466433).

47099431 is a wasteful number, since it uses less digits than its factorization.

47099431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466432.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 47099431 is about 6862.9025200712. The cubic root of 47099431 is about 361.1369175474.

The spelling of 47099431 in words is "forty-seven million, ninety-nine thousand, four hundred thirty-one".