40456901 has 2 divisors, whose sum is σ = 40456902. Its totient is φ = 40456900.

The previous prime is 40456817. The next prime is 40456903. The reversal of 40456901 is 10965404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34692100 + 5764801 = 5890^2 + 2401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40456901 is a prime.

Together with 40456903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40456903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20228450 + 20228451.

It is an arithmetic number, because the mean of its divisors is an integer number (20228451).

Almost surely, 2^40456901 is an apocalyptic number.

It is an amenable number.

40456901 is a deficient number, since it is larger than the sum of its proper divisors (1).

40456901 is an equidigital number, since it uses as much as digits as its factorization.

40456901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40456901 is about 6360.5739520895. The cubic root of 40456901 is about 343.2924121483.

The spelling of 40456901 in words is "forty million, four hundred fifty-six thousand, nine hundred one".