140167939 has 4 divisors (see below), whose sum is σ = 140191624. Its totient is φ = 140144256.

The previous prime is 140167927. The next prime is 140167961. The reversal of 140167939 is 939761041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 140167939 - 2¹⁷ = 140036867 is a prime.

It is a super-2 number, since 2×140167939² = 39294102247015442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140167439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5539 + ... + 17635.

It is an arithmetic number, because the mean of its divisors is an integer number (35047906).

Almost surely, 2^140167939 is an apocalyptic number.

140167939 is a deficient number, since it is larger than the sum of its proper divisors (23685).

140167939 is a wasteful number, since it uses less digits than its factorization.

140167939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23684.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 140167939 is about 11839.2541572516. The cubic root of 140167939 is about 519.4569515701.

The spelling of 140167939 in words is "one hundred forty million, one hundred sixty-seven thousand, nine hundred thirty-nine".