40139163 has 24 divisors (see below), whose sum is σ = 60852480. Its totient is φ = 25446960.

The previous prime is 40139149. The next prime is 40139171. The reversal of 40139163 is 36193104.

It is not a de Polignac number, because 40139163 - 2⁴ = 40139147 is a prime.

It is a super-2 number, since 2×40139163² = 3222304812681138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40139173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43218 + ... + 44136.

It is an arithmetic number, because the mean of its divisors is an integer number (2535520).

Almost surely, 2^40139163 is an apocalyptic number.

40139163 is a deficient number, since it is larger than the sum of its proper divisors (20713317).

40139163 is a wasteful number, since it uses less digits than its factorization.

40139163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 40139163 is about 6335.5475690740. The cubic root of 40139163 is about 342.3913392493.

The spelling of 40139163 in words is "forty million, one hundred thirty-nine thousand, one hundred sixty-three".