40993739 has 2 divisors, whose sum is σ = 40993740. Its totient is φ = 40993738.

The previous prime is 40993721. The next prime is 40993753. The reversal of 40993739 is 93739904.

It is a happy number.

40993739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40993739 - 2¹² = 40989643 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40993739.

It is not a weakly prime, because it can be changed into another prime (40993709) 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 as a sum of consecutive naturals, namely, 20496869 + 20496870.

It is an arithmetic number, because the mean of its divisors is an integer number (20496870).

Almost surely, 2^40993739 is an apocalyptic number.

40993739 is a deficient number, since it is larger than the sum of its proper divisors (1).

40993739 is an equidigital number, since it uses as much as digits as its factorization.

40993739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 40993739 is about 6402.6353168051. The cubic root of 40993739 is about 344.8041708780.

The spelling of 40993739 in words is "forty million, nine hundred ninety-three thousand, seven hundred thirty-nine".