40458919 has 2 divisors, whose sum is σ = 40458920. Its totient is φ = 40458918.

The previous prime is 40458907. The next prime is 40458953. The reversal of 40458919 is 91985404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40458919 - 2⁷ = 40458791 is a prime.

It is a super-2 number, since 2×40458919² = 3273848253297122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40450919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20229459 + 20229460.

It is an arithmetic number, because the mean of its divisors is an integer number (20229460).

Almost surely, 2^40458919 is an apocalyptic number.

40458919 is a deficient number, since it is larger than the sum of its proper divisors (1).

40458919 is an equidigital number, since it uses as much as digits as its factorization.

40458919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 40458919 is about 6360.7325835944. The cubic root of 40458919 is about 343.2981198895.

The spelling of 40458919 in words is "forty million, four hundred fifty-eight thousand, nine hundred nineteen".