11855397 has 8 divisors (see below), whose sum is σ = 15828256. Its totient is φ = 7893072.

The previous prime is 11855387. The next prime is 11855407. The reversal of 11855397 is 79355811.

11855397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11855387) and next prime (11855407).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11855397 - 2⁴ = 11855381 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 (11855357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543 + ... + 4899.

It is an arithmetic number, because the mean of its divisors is an integer number (1978532).

Almost surely, 2^11855397 is an apocalyptic number.

It is an amenable number.

11855397 is a deficient number, since it is larger than the sum of its proper divisors (3972859).

11855397 is an equidigital number, since it uses as much as digits as its factorization.

11855397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5267.

The product of its digits is 37800, while the sum is 39.

The square root of 11855397 is about 3443.1667110380. The cubic root of 11855397 is about 228.0195235667.

The spelling of 11855397 in words is "eleven million, eight hundred fifty-five thousand, three hundred ninety-seven".