47649637 has 4 divisors (see below), whose sum is σ = 54456736. Its totient is φ = 40842540.

The previous prime is 47649619. The next prime is 47649643. The reversal of 47649637 is 73694674.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47649637 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 (47649647) 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, 3403539 + ... + 3403552.

It is an arithmetic number, because the mean of its divisors is an integer number (13614184).

Almost surely, 2^47649637 is an apocalyptic number.

It is an amenable number.

47649637 is a deficient number, since it is larger than the sum of its proper divisors (6807099).

47649637 is an equidigital number, since it uses as much as digits as its factorization.

47649637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6807098.

The product of its digits is 762048, while the sum is 46.

The square root of 47649637 is about 6902.8716488140. The cubic root of 47649637 is about 362.5377197373.

The spelling of 47649637 in words is "forty-seven million, six hundred forty-nine thousand, six hundred thirty-seven".