11430639 has 20 divisors (see below), whose sum is σ = 18629160. Its totient is φ = 6927120.

The previous prime is 11430637. The next prime is 11430689. The reversal of 11430639 is 93603411.

It is not a de Polignac number, because 11430639 - 2¹ = 11430637 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11430637) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5524 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (931458).

Almost surely, 2^11430639 is an apocalyptic number.

11430639 is a deficient number, since it is larger than the sum of its proper divisors (7198521).

11430639 is a wasteful number, since it uses less digits than its factorization.

11430639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12852 (or 12843 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 11430639 is about 3380.9228030229. The cubic root of 11430639 is about 225.2631587576.

The spelling of 11430639 in words is "eleven million, four hundred thirty thousand, six hundred thirty-nine".