47492387 has 4 divisors (see below), whose sum is σ = 47551056. Its totient is φ = 47433720.

The previous prime is 47492363. The next prime is 47492411. The reversal of 47492387 is 78329474.

47492387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (47492363) and next prime (47492411).

It is a cyclic number.

It is not a de Polignac number, because 47492387 - 2⁸ = 47492131 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47492317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28103 + ... + 29744.

It is an arithmetic number, because the mean of its divisors is an integer number (11887764).

Almost surely, 2^47492387 is an apocalyptic number.

47492387 is a deficient number, since it is larger than the sum of its proper divisors (58669).

47492387 is an equidigital number, since it uses as much as digits as its factorization.

47492387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58668.

The product of its digits is 338688, while the sum is 44.

The square root of 47492387 is about 6891.4720488441. The cubic root of 47492387 is about 362.1384730155.

The spelling of 47492387 in words is "forty-seven million, four hundred ninety-two thousand, three hundred eighty-seven".