40874389 has 2 divisors, whose sum is σ = 40874390. Its totient is φ = 40874388.

The previous prime is 40874371. The next prime is 40874411. The reversal of 40874389 is 98347804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29517489 + 11356900 = 5433^2 + 3370^2 .

It is a cyclic number.

It is not a de Polignac number, because 40874389 - 2⁷ = 40874261 is a prime.

It is a super-2 number, since 2×40874389² = 3341431352246642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40874329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20437194 + 20437195.

It is an arithmetic number, because the mean of its divisors is an integer number (20437195).

Almost surely, 2^40874389 is an apocalyptic number.

It is an amenable number.

40874389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40874389 is an equidigital number, since it uses as much as digits as its factorization.

40874389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 40874389 is about 6393.3081421123. The cubic root of 40874389 is about 344.4692223321.

The spelling of 40874389 in words is "forty million, eight hundred seventy-four thousand, three hundred eighty-nine".