40199457 has 4 divisors (see below), whose sum is σ = 53599280. Its totient is φ = 26799636.

The previous prime is 40199449. The next prime is 40199479. The reversal of 40199457 is 75499104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40199457 - 2³ = 40199449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40199417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6699907 + ... + 6699912.

It is an arithmetic number, because the mean of its divisors is an integer number (13399820).

Almost surely, 2^40199457 is an apocalyptic number.

It is an amenable number.

40199457 is a deficient number, since it is larger than the sum of its proper divisors (13399823).

40199457 is a wasteful number, since it uses less digits than its factorization.

40199457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13399822.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 40199457 is about 6340.3041725141. The cubic root of 40199457 is about 342.5626915629.

The spelling of 40199457 in words is "forty million, one hundred ninety-nine thousand, four hundred fifty-seven".