47492661 has 4 divisors (see below), whose sum is σ = 63323552. Its totient is φ = 31661772.

The previous prime is 47492659. The next prime is 47492689. The reversal of 47492661 is 16629474.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47492661 - 2¹ = 47492659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47492161) 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, 7915441 + ... + 7915446.

It is an arithmetic number, because the mean of its divisors is an integer number (15830888).

Almost surely, 2^47492661 is an apocalyptic number.

It is an amenable number.

47492661 is a deficient number, since it is larger than the sum of its proper divisors (15830891).

47492661 is a wasteful number, since it uses less digits than its factorization.

47492661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15830890.

The product of its digits is 72576, while the sum is 39.

The square root of 47492661 is about 6891.4919284579. The cubic root of 47492661 is about 362.1391694482.

The spelling of 47492661 in words is "forty-seven million, four hundred ninety-two thousand, six hundred sixty-one".