47443491 has 18 divisors (see below), whose sum is σ = 70184868. Its totient is φ = 30882600.

The previous prime is 47443477. The next prime is 47443499. The reversal of 47443491 is 19434474.

It is not a de Polignac number, because 47443491 - 2¹³ = 47435299 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (47443499) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15216 + ... + 18066.

Almost surely, 2^47443491 is an apocalyptic number.

47443491 is a deficient number, since it is larger than the sum of its proper divisors (22741377).

47443491 is a wasteful number, since it uses less digits than its factorization.

47443491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943 (or 2897 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 47443491 is about 6887.9235622936. The cubic root of 47443491 is about 362.0141499104.

The spelling of 47443491 in words is "forty-seven million, four hundred forty-three thousand, four hundred ninety-one".