40237937 has 2 divisors, whose sum is σ = 40237938. Its totient is φ = 40237936.

The previous prime is 40237931. The next prime is 40237949. The reversal of 40237937 is 73973204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39137536 + 1100401 = 6256^2 + 1049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40237937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40237897 and 40237906.

It is not a weakly prime, because it can be changed into another prime (40237931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20118968 + 20118969.

It is an arithmetic number, because the mean of its divisors is an integer number (20118969).

Almost surely, 2^40237937 is an apocalyptic number.

It is an amenable number.

40237937 is a deficient number, since it is larger than the sum of its proper divisors (1).

40237937 is an equidigital number, since it uses as much as digits as its factorization.

40237937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 40237937 is about 6343.3380013996. The cubic root of 40237937 is about 342.6719601086.

The spelling of 40237937 in words is "forty million, two hundred thirty-seven thousand, nine hundred thirty-seven".