37449921 has 4 divisors (see below), whose sum is σ = 49933232. Its totient is φ = 24966612.

The previous prime is 37449901. The next prime is 37449941. The reversal of 37449921 is 12994473.

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 an interprime number because it is at equal distance from previous prime (37449901) and next prime (37449941).

It is not a de Polignac number, because 37449921 - 2⁹ = 37449409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 37449921.

It is not an unprimeable number, because it can be changed into a prime (37449901) 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, 6241651 + ... + 6241656.

It is an arithmetic number, because the mean of its divisors is an integer number (12483308).

Almost surely, 2^37449921 is an apocalyptic number.

It is an amenable number.

37449921 is a deficient number, since it is larger than the sum of its proper divisors (12483311).

37449921 is a wasteful number, since it uses less digits than its factorization.

37449921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12483310.

The product of its digits is 54432, while the sum is 39.

The square root of 37449921 is about 6119.6340576868. The cubic root of 37449921 is about 334.5674107428.

The spelling of 37449921 in words is "thirty-seven million, four hundred forty-nine thousand, nine hundred twenty-one".