11438779 has 16 divisors (see below), whose sum is σ = 13248000. Its totient is φ = 9767520.

The previous prime is 11438771. The next prime is 11438803. The reversal of 11438779 is 97783411.

It is not a de Polignac number, because 11438779 - 2³ = 11438771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11438771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47742 + ... + 47980.

It is an arithmetic number, because the mean of its divisors is an integer number (828000).

Almost surely, 2^11438779 is an apocalyptic number.

11438779 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11438779 is a deficient number, since it is larger than the sum of its proper divisors (1809221).

11438779 is a wasteful number, since it uses less digits than its factorization.

11438779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its digits is 42336, while the sum is 40.

The square root of 11438779 is about 3382.1264021322. The cubic root of 11438779 is about 225.3166176245.

The spelling of 11438779 in words is "eleven million, four hundred thirty-eight thousand, seven hundred seventy-nine".