237640049 has 4 divisors (see below), whose sum is σ = 250147440. Its totient is φ = 225132660.

The previous prime is 237640021. The next prime is 237640111. The reversal of 237640049 is 940046732.

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 not a de Polignac number, because 237640049 - 2⁸ = 237639793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (237640019) 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, 6253667 + ... + 6253704.

It is an arithmetic number, because the mean of its divisors is an integer number (62536860).

Almost surely, 2^237640049 is an apocalyptic number.

It is an amenable number.

237640049 is a deficient number, since it is larger than the sum of its proper divisors (12507391).

237640049 is a wasteful number, since it uses less digits than its factorization.

237640049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507390.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 237640049 is about 15415.5781273360. The cubic root of 237640049 is about 619.4028668022.

The spelling of 237640049 in words is "two hundred thirty-seven million, six hundred forty thousand, forty-nine".