11439388 has 6 divisors (see below), whose sum is σ = 20018936. Its totient is φ = 5719692.

The previous prime is 11439383. The next prime is 11439409. The reversal of 11439388 is 88393411.

11439388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11439383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1429920 + ... + 1429927.

Almost surely, 2^11439388 is an apocalyptic number.

It is an amenable number.

11439388 is a deficient number, since it is larger than the sum of its proper divisors (8579548).

11439388 is a wasteful number, since it uses less digits than its factorization.

11439388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859851 (or 2859849 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 11439388 is about 3382.2164330510. The cubic root of 11439388 is about 225.3206161686.

It can be divided in two parts, 114393 and 88, that added together give a triangular number (114481 = T₄₇₈).

The spelling of 11439388 in words is "eleven million, four hundred thirty-nine thousand, three hundred eighty-eight".