1040232409 has 4 divisors (see below), whose sum is σ = 1040324560. Its totient is φ = 1040140260.

The previous prime is 1040232379. The next prime is 1040232433. The reversal of 1040232409 is 9042320401.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1040232409 - 2⁵ = 1040232377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040232509) 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, 26319 + ... + 52660.

It is an arithmetic number, because the mean of its divisors is an integer number (260081140).

Almost surely, 2^1040232409 is an apocalyptic number.

It is an amenable number.

1040232409 is a deficient number, since it is larger than the sum of its proper divisors (92151).

1040232409 is an equidigital number, since it uses as much as digits as its factorization.

1040232409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92150.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1040232409 is about 32252.6341404853. The cubic root of 1040232409 is about 1013.2348685080.

The spelling of 1040232409 in words is "one billion, forty million, two hundred thirty-two thousand, four hundred nine".