11409739 has 4 divisors (see below), whose sum is σ = 12447000. Its totient is φ = 10372480.

The previous prime is 11409721. The next prime is 11409757. The reversal of 11409739 is 93790411.

11409739 is digitally balanced in base 2 and base 3, because in such bases 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 an interprime number because it is at equal distance from previous prime (11409721) and next prime (11409757).

It is a cyclic number.

It is not a de Polignac number, because 11409739 - 2⁷ = 11409611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11401739) 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, 518614 + ... + 518635.

It is an arithmetic number, because the mean of its divisors is an integer number (3111750).

Almost surely, 2^11409739 is an apocalyptic number.

11409739 is a deficient number, since it is larger than the sum of its proper divisors (1037261).

11409739 is a wasteful number, since it uses less digits than its factorization.

11409739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037260.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 11409739 is about 3377.8305167666. The cubic root of 11409739 is about 225.1257831675.

It can be divided in two parts, 11 and 409739, that multiplied together give a square (4507129 = 2123²).

The spelling of 11409739 in words is "eleven million, four hundred nine thousand, seven hundred thirty-nine".