49387631 has 4 divisors (see below), whose sum is σ = 51987000. Its totient is φ = 46788264.

The previous prime is 49387627. The next prime is 49387651. The reversal of 49387631 is 13678394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13678394 = 2 ⋅6839197.

It is a cyclic number.

It is not a de Polignac number, because 49387631 - 2² = 49387627 is a prime.

It is a super-2 number, since 2×49387631² = 4878276191584322, 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 (49387651) 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, 1299656 + ... + 1299693.

It is an arithmetic number, because the mean of its divisors is an integer number (12996750).

Almost surely, 2^49387631 is an apocalyptic number.

49387631 is a deficient number, since it is larger than the sum of its proper divisors (2599369).

49387631 is a wasteful number, since it uses less digits than its factorization.

49387631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599368.

The product of its digits is 108864, while the sum is 41.

The square root of 49387631 is about 7027.6333854293. The cubic root of 49387631 is about 366.8929766360.

The spelling of 49387631 in words is "forty-nine million, three hundred eighty-seven thousand, six hundred thirty-one".