140218939 has 12 divisors (see below), whose sum is σ = 163968024. Its totient is φ = 119556864.

The previous prime is 140218909. The next prime is 140218951. The reversal of 140218939 is 939812041.

140218939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140218939 - 2¹⁵ = 140186171 is a prime.

It is a super-2 number, since 2×140218939² = 39322701708571442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140218898 and 140218907.

It is not an unprimeable number, because it can be changed into a prime (140218909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2044 + ... + 16870.

It is an arithmetic number, because the mean of its divisors is an integer number (13664002).

Almost surely, 2^140218939 is an apocalyptic number.

140218939 is a deficient number, since it is larger than the sum of its proper divisors (23749085).

140218939 is a wasteful number, since it uses less digits than its factorization.

140218939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15034 (or 15027 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 140218939 is about 11841.4078132627. The cubic root of 140218939 is about 519.5199452720.

The spelling of 140218939 in words is "one hundred forty million, two hundred eighteen thousand, nine hundred thirty-nine".