11621397 has 4 divisors (see below), whose sum is σ = 15495200. Its totient is φ = 7747596.

The previous prime is 11621383. The next prime is 11621399. The reversal of 11621397 is 79312611.

11621397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 11621397 - 2⁶ = 11621333 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 (11621399) 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, 1936897 + ... + 1936902.

It is an arithmetic number, because the mean of its divisors is an integer number (3873800).

Almost surely, 2^11621397 is an apocalyptic number.

It is an amenable number.

11621397 is a deficient number, since it is larger than the sum of its proper divisors (3873803).

11621397 is an equidigital number, since it uses as much as digits as its factorization.

11621397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873802.

The product of its digits is 2268, while the sum is 30.

The square root of 11621397 is about 3409.0170137446. The cubic root of 11621397 is about 226.5093388739.

The spelling of 11621397 in words is "eleven million, six hundred twenty-one thousand, three hundred ninety-seven".