40488797 has 2 divisors, whose sum is σ = 40488798. Its totient is φ = 40488796.

The previous prime is 40488731. The next prime is 40488817. The reversal of 40488797 is 79788404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39363076 + 1125721 = 6274^2 + 1061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40488797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40481797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20244398 + 20244399.

It is an arithmetic number, because the mean of its divisors is an integer number (20244399).

Almost surely, 2^40488797 is an apocalyptic number.

It is an amenable number.

40488797 is a deficient number, since it is larger than the sum of its proper divisors (1).

40488797 is an equidigital number, since it uses as much as digits as its factorization.

40488797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 40488797 is about 6363.0807789938. The cubic root of 40488797 is about 343.3826050714.

The spelling of 40488797 in words is "forty million, four hundred eighty-eight thousand, seven hundred ninety-seven".