11400149 has 4 divisors (see below), whose sum is σ = 12070764. Its totient is φ = 10729536.

The previous prime is 11400131. The next prime is 11400199. The reversal of 11400149 is 94100411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94100411 = 113 ⋅832747.

It can be written as a sum of positive squares in 2 ways, for example, as 6027025 + 5373124 = 2455^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 11400149 - 2²⁰ = 10351573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11400149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400199) 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, 335282 + ... + 335315.

It is an arithmetic number, because the mean of its divisors is an integer number (3017691).

Almost surely, 2^11400149 is an apocalyptic number.

It is an amenable number.

11400149 is a deficient number, since it is larger than the sum of its proper divisors (670615).

11400149 is an equidigital number, since it uses as much as digits as its factorization.

11400149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670614.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 11400149 is about 3376.4106681504. The cubic root of 11400149 is about 225.0626919955.

The spelling of 11400149 in words is "eleven million, four hundred thousand, one hundred forty-nine".