47490431 has 4 divisors (see below), whose sum is σ = 47739264. Its totient is φ = 47241600.

The previous prime is 47490413. The next prime is 47490449. The reversal of 47490431 is 13409474.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (47490413) and next prime (47490449).

It is a cyclic number.

It is not a de Polignac number, because 47490431 - 2¹⁸ = 47228287 is a prime.

It is a super-2 number, since 2×47490431² = 4510682073131522, 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 (47490451) 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, 124130 + ... + 124511.

It is an arithmetic number, because the mean of its divisors is an integer number (11934816).

Almost surely, 2^47490431 is an apocalyptic number.

47490431 is a deficient number, since it is larger than the sum of its proper divisors (248833).

47490431 is a wasteful number, since it uses less digits than its factorization.

47490431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248832.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 47490431 is about 6891.3301328553. The cubic root of 47490431 is about 362.1335013234.

The spelling of 47490431 in words is "forty-seven million, four hundred ninety thousand, four hundred thirty-one".