140779431 has 32 divisors (see below), whose sum is σ = 237827520. Its totient is φ = 81533952.

The previous prime is 140779423. The next prime is 140779517. The reversal of 140779431 is 134977041.

140779431 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 140779431 - 2³ = 140779423 is a prime.

It is a super-2 number, since 2×140779431² = 39637696385367522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140772431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5830 + ... + 17763.

It is an arithmetic number, because the mean of its divisors is an integer number (7432110).

Almost surely, 2^140779431 is an apocalyptic number.

140779431 is a deficient number, since it is larger than the sum of its proper divisors (97048089).

140779431 is a wasteful number, since it uses less digits than its factorization.

140779431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23632 (or 23626 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 140779431 is about 11865.0508216358. The cubic root of 140779431 is about 520.2112443009.

The spelling of 140779431 in words is "one hundred forty million, seven hundred seventy-nine thousand, four hundred thirty-one".