15440949 has 28 divisors (see below), whose sum is σ = 23608800. Its totient is φ = 10091304.

The previous prime is 15440941. The next prime is 15440959. The reversal of 15440949 is 94904451.

It is a happy number.

It is not a de Polignac number, because 15440949 - 2³ = 15440941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15440941) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 42832 + ... + 43190.

Almost surely, 2^15440949 is an apocalyptic number.

It is an amenable number.

15440949 is a deficient number, since it is larger than the sum of its proper divisors (8167851).

15440949 is an frugal number, since it uses more digits than its factorization.

15440949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 15440949 is about 3929.4972960927. The cubic root of 15440949 is about 249.0145150488.

The spelling of 15440949 in words is "fifteen million, four hundred forty thousand, nine hundred forty-nine".