11642739 has 16 divisors (see below), whose sum is σ = 16547328. Its totient is φ = 7256192.

The previous prime is 11642731. The next prime is 11642749. The reversal of 11642739 is 93724611.

It is a cyclic number.

It is not a de Polignac number, because 11642739 - 2³ = 11642731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11642731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7834 + ... + 9200.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 2^11642739 is an apocalyptic number.

11642739 is a deficient number, since it is larger than the sum of its proper divisors (4904589).

11642739 is a wasteful number, since it uses less digits than its factorization.

11642739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554.

The product of its digits is 9072, while the sum is 33.

The square root of 11642739 is about 3412.1458057944. The cubic root of 11642739 is about 226.6479110298.

The spelling of 11642739 in words is "eleven million, six hundred forty-two thousand, seven hundred thirty-nine".