13729090 has 16 divisors (see below), whose sum is σ = 24759288. Its totient is φ = 5481216.

The previous prime is 13729061. The next prime is 13729099. The reversal of 13729090 is 9092731.

13729090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11068929 + 2660161 = 3327^2 + 1631^2 .

It is not an unprimeable number, because it can be changed into a prime (13729099) 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, 6394 + ... + 8266.

Almost surely, 2^13729090 is an apocalyptic number.

13729090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13729090 is a deficient number, since it is larger than the sum of its proper divisors (11030198).

13729090 is a wasteful number, since it uses less digits than its factorization.

13729090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 13729090 is about 3705.2786669831. The cubic root of 13729090 is about 239.4494905275.

The spelling of 13729090 in words is "thirteen million, seven hundred twenty-nine thousand, ninety".