11919149 has 4 divisors (see below), whose sum is σ = 13002720. Its totient is φ = 10835580.

The previous prime is 11919139. The next prime is 11919157. The reversal of 11919149 is 94191911.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 11919149 - 2¹⁶ = 11853613 is a prime.

It is a super-2 number, since 2×11919149² = 284132225768402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11919109) 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, 541769 + ... + 541790.

It is an arithmetic number, because the mean of its divisors is an integer number (3250680).

Almost surely, 2^11919149 is an apocalyptic number.

It is an amenable number.

11919149 is a deficient number, since it is larger than the sum of its proper divisors (1083571).

11919149 is a wasteful number, since it uses less digits than its factorization.

11919149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083570.

The product of its digits is 2916, while the sum is 35.

The square root of 11919149 is about 3452.4120553607. The cubic root of 11919149 is about 228.4275155656.

The spelling of 11919149 in words is "eleven million, nine hundred nineteen thousand, one hundred forty-nine".