40097489 has 2 divisors, whose sum is σ = 40097490. Its totient is φ = 40097488.

The previous prime is 40097483. The next prime is 40097527. The reversal of 40097489 is 98479004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26956864 + 13140625 = 5192^2 + 3625^2 .

It is a cyclic number.

It is not a de Polignac number, because 40097489 - 2²⁰ = 39048913 is a prime.

It is not a weakly prime, because it can be changed into another prime (40097483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20048744 + 20048745.

It is an arithmetic number, because the mean of its divisors is an integer number (20048745).

Almost surely, 2^40097489 is an apocalyptic number.

It is an amenable number.

40097489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40097489 is an equidigital number, since it uses as much as digits as its factorization.

40097489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40097489 is about 6332.2578121867. The cubic root of 40097489 is about 342.2728036629.

The spelling of 40097489 in words is "forty million, ninety-seven thousand, four hundred eighty-nine".