40155279 has 8 divisors (see below), whose sum is σ = 53895552. Its totient is φ = 26592600.

The previous prime is 40155259. The next prime is 40155289. The reversal of 40155279 is 97255104.

40155279 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 40155279 - 2⁹ = 40154767 is a prime.

It is a super-2 number, since 2×40155279² = 3224892863135682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155209) 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, 43869 + ... + 44774.

It is an arithmetic number, because the mean of its divisors is an integer number (6736944).

Almost surely, 2^40155279 is an apocalyptic number.

40155279 is a deficient number, since it is larger than the sum of its proper divisors (13740273).

40155279 is a wasteful number, since it uses less digits than its factorization.

40155279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88797.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 40155279 is about 6336.8193125574. The cubic root of 40155279 is about 342.4371568505.

The spelling of 40155279 in words is "forty million, one hundred fifty-five thousand, two hundred seventy-nine".