13919490 has 48 divisors (see below), whose sum is σ = 38977848. Its totient is φ = 3426048.

The previous prime is 13919471. The next prime is 13919491. The reversal of 13919490 is 9491931.

It can be written as a sum of positive squares in 4 ways, for example, as 12680721 + 1238769 = 3561^2 + 1113^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13919491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4779 + ... + 7118.

Almost surely, 2^13919490 is an apocalyptic number.

13919490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13919490 is an abundant number, since it is smaller than the sum of its proper divisors (25058358).

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

13919490 is a wasteful number, since it uses less digits than its factorization.

13919490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11923 (or 11920 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 13919490 is about 3730.8832734354. The cubic root of 13919490 is about 240.5513366464.

The spelling of 13919490 in words is "thirteen million, nine hundred nineteen thousand, four hundred ninety".