11438691 has 8 divisors (see below), whose sum is σ = 16638144. Its totient is φ = 6932520.

The previous prime is 11438689. The next prime is 11438701. The reversal of 11438691 is 19683411.

11438691 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11438691 - 2¹ = 11438689 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 346627 = 11438691 / (1 + 1 + 4 + 3 + 8 + 6 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (11438491) 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, 173281 + ... + 173346.

It is an arithmetic number, because the mean of its divisors is an integer number (2079768).

Almost surely, 2^11438691 is an apocalyptic number.

11438691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11438691 is a deficient number, since it is larger than the sum of its proper divisors (5199453).

11438691 is a wasteful number, since it uses less digits than its factorization.

11438691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346641.

The product of its digits is 5184, while the sum is 33.

The square root of 11438691 is about 3382.1133925402. The cubic root of 11438691 is about 225.3160398265.

The spelling of 11438691 in words is "eleven million, four hundred thirty-eight thousand, six hundred ninety-one".