13909158 has 40 divisors (see below), whose sum is σ = 32530608. Its totient is φ = 4433616.

The previous prime is 13909157. The next prime is 13909169. The reversal of 13909158 is 85190931.

It is a happy number.

13909158 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909153) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1860 + ... + 5592.

Almost surely, 2^13909158 is an apocalyptic number.

13909158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13909158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16265304).

13909158 is an abundant number, since it is smaller than the sum of its proper divisors (18621450).

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

13909158 is a wasteful number, since it uses less digits than its factorization.

13909158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770 (or 3761 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 13909158 is about 3729.4983576883. The cubic root of 13909158 is about 240.4918040150.

The spelling of 13909158 in words is "thirteen million, nine hundred nine thousand, one hundred fifty-eight".