140924909 has 4 divisors (see below), whose sum is σ = 142293216. Its totient is φ = 139556604.

The previous prime is 140924879. The next prime is 140924911. The reversal of 140924909 is 909429041.

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.

It is a cyclic number.

It is not a de Polignac number, because 140924909 - 2²⁰ = 139876333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140924929) 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, 683999 + ... + 684204.

It is an arithmetic number, because the mean of its divisors is an integer number (35573304).

Almost surely, 2^140924909 is an apocalyptic number.

It is an amenable number.

140924909 is a deficient number, since it is larger than the sum of its proper divisors (1368307).

140924909 is a wasteful number, since it uses less digits than its factorization.

140924909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368306.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 140924909 is about 11871.1797644548. The cubic root of 140924909 is about 520.3903737789.

The spelling of 140924909 in words is "one hundred forty million, nine hundred twenty-four thousand, nine hundred nine".