40099457 has 2 divisors, whose sum is σ = 40099458. Its totient is φ = 40099456.

The previous prime is 40099441. The next prime is 40099459. The reversal of 40099457 is 75499004.

40099457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20421361 + 19678096 = 4519^2 + 4436^2 .

It is a cyclic number.

It is not a de Polignac number, because 40099457 - 2⁴ = 40099441 is a prime.

Together with 40099459, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40099457.

It is not a weakly prime, because it can be changed into another prime (40099459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20049728 + 20049729.

It is an arithmetic number, because the mean of its divisors is an integer number (20049729).

Almost surely, 2^40099457 is an apocalyptic number.

It is an amenable number.

40099457 is a deficient number, since it is larger than the sum of its proper divisors (1).

40099457 is an equidigital number, since it uses as much as digits as its factorization.

40099457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 40099457 is about 6332.4132050901. The cubic root of 40099457 is about 342.2784031977.

The spelling of 40099457 in words is "forty million, ninety-nine thousand, four hundred fifty-seven".