11649371 has 4 divisors (see below), whose sum is σ = 11933544. Its totient is φ = 11365200.

The previous prime is 11649367. The next prime is 11649377. The reversal of 11649371 is 17394611.

11649371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11649371 - 2² = 11649367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11649377) 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, 142025 + ... + 142106.

It is an arithmetic number, because the mean of its divisors is an integer number (2983386).

Almost surely, 2^11649371 is an apocalyptic number.

11649371 is a deficient number, since it is larger than the sum of its proper divisors (284173).

11649371 is an equidigital number, since it uses as much as digits as its factorization.

11649371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284172.

The product of its digits is 4536, while the sum is 32.

The square root of 11649371 is about 3413.1174899203. The cubic root of 11649371 is about 226.6909376644.

The spelling of 11649371 in words is "eleven million, six hundred forty-nine thousand, three hundred seventy-one".