40912637 has 2 divisors, whose sum is σ = 40912638. Its totient is φ = 40912636.

The previous prime is 40912621. The next prime is 40912657. The reversal of 40912637 is 73621904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35868121 + 5044516 = 5989^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 40912637 - 2⁴ = 40912621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40912657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20456318 + 20456319.

It is an arithmetic number, because the mean of its divisors is an integer number (20456319).

Almost surely, 2^40912637 is an apocalyptic number.

It is an amenable number.

40912637 is a deficient number, since it is larger than the sum of its proper divisors (1).

40912637 is an equidigital number, since it uses as much as digits as its factorization.

40912637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 40912637 is about 6396.2986953394. The cubic root of 40912637 is about 344.5766339388.

The spelling of 40912637 in words is "forty million, nine hundred twelve thousand, six hundred thirty-seven".