11409308997 has 4 divisors (see below), whose sum is σ = 15212412000. Its totient is φ = 7606205996.

The previous prime is 11409308969. The next prime is 11409309013. The reversal of 11409308997 is 79980390411.

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 11409308997 - 2⁸ = 11409308741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11409308947) 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, 1901551497 + ... + 1901551502.

It is an arithmetic number, because the mean of its divisors is an integer number (3803103000).

Almost surely, 2^11409308997 is an apocalyptic number.

It is an amenable number.

11409308997 is a deficient number, since it is larger than the sum of its proper divisors (3803103003).

11409308997 is an equidigital number, since it uses as much as digits as its factorization.

11409308997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803103002.

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 11409308997 in words is "eleven billion, four hundred nine million, three hundred eight thousand, nine hundred ninety-seven".