11372409 has 12 divisors (see below), whose sum is σ = 16468452. Its totient is φ = 7562400.

The previous prime is 11372401. The next prime is 11372429. The reversal of 11372409 is 90427311.

It can be written as a sum of positive squares in 2 ways, for example, as 3504384 + 7868025 = 1872^2 + 2805^2 .

It is not a de Polignac number, because 11372409 - 2³ = 11372401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11372401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2779 + ... + 5519.

It is an arithmetic number, because the mean of its divisors is an integer number (1372371).

Almost surely, 2^11372409 is an apocalyptic number.

It is an amenable number.

11372409 is a deficient number, since it is larger than the sum of its proper divisors (5096043).

11372409 is a wasteful number, since it uses less digits than its factorization.

11372409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 11372409 is about 3372.3002535362. The cubic root of 11372409 is about 224.8799952656.

It can be divided in two parts, 11372 and 409, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 11372409 in words is "eleven million, three hundred seventy-two thousand, four hundred nine".