13439490 has 16 divisors (see below), whose sum is σ = 32254848. Its totient is φ = 3583856.

The previous prime is 13439483. The next prime is 13439497. The reversal of 13439490 is 9493431.

It is an interprime number because it is at equal distance from previous prime (13439483) and next prime (13439497).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13439497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223962 + ... + 224021.

It is an arithmetic number, because the mean of its divisors is an integer number (2015928).

Almost surely, 2^13439490 is an apocalyptic number.

13439490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13439490 is an abundant number, since it is smaller than the sum of its proper divisors (18815358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13439490 is a wasteful number, since it uses less digits than its factorization.

13439490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447993.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 13439490 is about 3665.9909983523. The cubic root of 13439490 is about 237.7538707310.

The spelling of 13439490 in words is "thirteen million, four hundred thirty-nine thousand, four hundred ninety".