40574993 has 2 divisors, whose sum is σ = 40574994. Its totient is φ = 40574992.

The previous prime is 40574987. The next prime is 40575019. The reversal of 40574993 is 39947504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32913169 + 7661824 = 5737^2 + 2768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40574993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40574993.

It is not a weakly prime, because it can be changed into another prime (40574693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20287496 + 20287497.

It is an arithmetic number, because the mean of its divisors is an integer number (20287497).

Almost surely, 2^40574993 is an apocalyptic number.

It is an amenable number.

40574993 is a deficient number, since it is larger than the sum of its proper divisors (1).

40574993 is an equidigital number, since it uses as much as digits as its factorization.

40574993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 40574993 is about 6369.8503122130. The cubic root of 40574993 is about 343.6261064043.

The spelling of 40574993 in words is "forty million, five hundred seventy-four thousand, nine hundred ninety-three".