40179999 has 8 divisors (see below), whose sum is σ = 55301632. Its totient is φ = 25922520.

The previous prime is 40179983. The next prime is 40180031. The reversal of 40179999 is 99997104.

40179999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40179999 - 2⁴ = 40179983 is a prime.

It is a super-2 number, since 2×40179999² = 3228864639280002, which contains 22 as substring.

It is a Duffinian number.

40179999 is a modest number, since divided by 9999 gives 4017 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40179929) 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 in 7 ways as a sum of consecutive naturals, for example, 215929 + ... + 216114.

It is an arithmetic number, because the mean of its divisors is an integer number (6912704).

Almost surely, 2^40179999 is an apocalyptic number.

40179999 is a deficient number, since it is larger than the sum of its proper divisors (15121633).

40179999 is a wasteful number, since it uses less digits than its factorization.

40179999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432077.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 40179999 is about 6338.7695178165. The cubic root of 40179999 is about 342.5074117067.

The spelling of 40179999 in words is "forty million, one hundred seventy-nine thousand, nine hundred ninety-nine".