40740437 has 4 divisors (see below), whose sum is σ = 40754316. Its totient is φ = 40726560.

The previous prime is 40740419. The next prime is 40740443. The reversal of 40740437 is 73404704.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13845841 + 26894596 = 3721^2 + 5186^2 .

It is a cyclic number.

It is not a de Polignac number, because 40740437 - 2⁸ = 40740181 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 (40740407) 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, 614 + ... + 9047.

It is an arithmetic number, because the mean of its divisors is an integer number (10188579).

Almost surely, 2^40740437 is an apocalyptic number.

It is an amenable number.

40740437 is a deficient number, since it is larger than the sum of its proper divisors (13879).

40740437 is an equidigital number, since it uses as much as digits as its factorization.

40740437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13878.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 40740437 is about 6382.8235914836. The cubic root of 40740437 is about 344.0925166925.

The spelling of 40740437 in words is "forty million, seven hundred forty thousand, four hundred thirty-seven".