11639401 has 4 divisors (see below), whose sum is σ = 11667600. Its totient is φ = 11611204.

The previous prime is 11639389. The next prime is 11639413. The reversal of 11639401 is 10493611.

11639401 is digitally balanced in base 2, 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 an interprime number because it is at equal distance from previous prime (11639389) and next prime (11639413).

It is a cyclic number.

It is not a de Polignac number, because 11639401 - 2¹⁵ = 11606633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11630401) 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, 13471 + ... + 14308.

It is an arithmetic number, because the mean of its divisors is an integer number (2916900).

Almost surely, 2^11639401 is an apocalyptic number.

It is an amenable number.

11639401 is a deficient number, since it is larger than the sum of its proper divisors (28199).

11639401 is an equidigital number, since it uses as much as digits as its factorization.

11639401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28198.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 11639401 is about 3411.6566357123. The cubic root of 11639401 is about 226.6262488007.

The spelling of 11639401 in words is "eleven million, six hundred thirty-nine thousand, four hundred one".