140097579 has 16 divisors (see below), whose sum is σ = 193670400. Its totient is φ = 89976096.

The previous prime is 140097563. The next prime is 140097589. The reversal of 140097579 is 975790041.

It is a happy number.

It is not a de Polignac number, because 140097579 - 2⁴ = 140097563 is a prime.

It is a super-2 number, since 2×140097579² = 39254663283322482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140097579.

It is not an unprimeable number, because it can be changed into a prime (140097509) 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 15 ways as a sum of consecutive naturals, for example, 43962 + ... + 47040.

It is an arithmetic number, because the mean of its divisors is an integer number (12104400).

Almost surely, 2^140097579 is an apocalyptic number.

140097579 is a deficient number, since it is larger than the sum of its proper divisors (53572821).

140097579 is a wasteful number, since it uses less digits than its factorization.

140097579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 140097579 is about 11836.2823132942. The cubic root of 140097579 is about 519.3700198781.

The spelling of 140097579 in words is "one hundred forty million, ninety-seven thousand, five hundred seventy-nine".