11439867 has 4 divisors (see below), whose sum is σ = 15253160. Its totient is φ = 7626576.

The previous prime is 11439863. The next prime is 11439887. The reversal of 11439867 is 76893411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11439867 - 2² = 11439863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11439863) 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, 1906642 + ... + 1906647.

It is an arithmetic number, because the mean of its divisors is an integer number (3813290).

Almost surely, 2^11439867 is an apocalyptic number.

11439867 is a deficient number, since it is larger than the sum of its proper divisors (3813293).

11439867 is an equidigital number, since it uses as much as digits as its factorization.

11439867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813292.

The product of its digits is 36288, while the sum is 39.

The square root of 11439867 is about 3382.2872438632. The cubic root of 11439867 is about 225.3237610649.

The spelling of 11439867 in words is "eleven million, four hundred thirty-nine thousand, eight hundred sixty-seven".