140328569 has 4 divisors (see below), whose sum is σ = 142104960. Its totient is φ = 138552180.

The previous prime is 140328553. The next prime is 140328581. The reversal of 140328569 is 965823041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 965823041 = 6599 ⋅146359.

It is a cyclic number.

It is not a de Polignac number, because 140328569 - 2⁴ = 140328553 is a prime.

It is a super-2 number, since 2×140328569² = 39384214555175522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140322569) 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, 888077 + ... + 888234.

It is an arithmetic number, because the mean of its divisors is an integer number (35526240).

Almost surely, 2^140328569 is an apocalyptic number.

It is an amenable number.

140328569 is a deficient number, since it is larger than the sum of its proper divisors (1776391).

140328569 is an equidigital number, since it uses as much as digits as its factorization.

140328569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776390.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 140328569 is about 11846.0360036596. The cubic root of 140328569 is about 519.6553053384.

The spelling of 140328569 in words is "one hundred forty million, three hundred twenty-eight thousand, five hundred sixty-nine".