11958149 has 4 divisors (see below), whose sum is σ = 13666464. Its totient is φ = 10249836.

The previous prime is 11958119. The next prime is 11958181. The reversal of 11958149 is 94185911.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94185911 = 587 ⋅160453.

It is a cyclic number.

It is not a de Polignac number, because 11958149 - 2¹² = 11954053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11958119) 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, 854147 + ... + 854160.

It is an arithmetic number, because the mean of its divisors is an integer number (3416616).

Almost surely, 2^11958149 is an apocalyptic number.

It is an amenable number.

11958149 is a deficient number, since it is larger than the sum of its proper divisors (1708315).

11958149 is an equidigital number, since it uses as much as digits as its factorization.

11958149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708314.

The product of its digits is 12960, while the sum is 38.

The square root of 11958149 is about 3458.0556675681. The cubic root of 11958149 is about 228.6763860793.

The spelling of 11958149 in words is "eleven million, nine hundred fifty-eight thousand, one hundred forty-nine".