40255437 has 4 divisors (see below), whose sum is σ = 53673920. Its totient is φ = 26836956.

The previous prime is 40255429. The next prime is 40255447. The reversal of 40255437 is 73455204.

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 40255437 - 2³ = 40255429 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 (40255417) 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, 6709237 + ... + 6709242.

It is an arithmetic number, because the mean of its divisors is an integer number (13418480).

Almost surely, 2^40255437 is an apocalyptic number.

It is an amenable number.

40255437 is a deficient number, since it is larger than the sum of its proper divisors (13418483).

40255437 is a wasteful number, since it uses less digits than its factorization.

40255437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13418482.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 40255437 is about 6344.7172513832. The cubic root of 40255437 is about 342.7216303999.

The spelling of 40255437 in words is "forty million, two hundred fifty-five thousand, four hundred thirty-seven".