40154859 has 20 divisors (see below), whose sum is σ = 60579376. Its totient is φ = 26504496.

The previous prime is 40154843. The next prime is 40154861. The reversal of 40154859 is 95845104.

It is not a de Polignac number, because 40154859 - 2⁴ = 40154843 is a prime.

It is a super-2 number, since 2×40154859² = 3224825402619762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40154839) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5937 + ... + 10749.

Almost surely, 2^40154859 is an apocalyptic number.

40154859 is a deficient number, since it is larger than the sum of its proper divisors (20424517).

40154859 is a wasteful number, since it uses less digits than its factorization.

40154859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928 (or 4919 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 40154859 is about 6336.7861728166. The cubic root of 40154859 is about 342.4359629510.

The spelling of 40154859 in words is "forty million, one hundred fifty-four thousand, eight hundred fifty-nine".