13949658 has 24 divisors (see below), whose sum is σ = 31344768. Its totient is φ = 4649724.

The previous prime is 13949657. The next prime is 13949671. The reversal of 13949658 is 85694931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13949651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13866 + ... + 14837.

It is an arithmetic number, because the mean of its divisors is an integer number (1306032).

Almost surely, 2^13949658 is an apocalyptic number.

13949658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13949658 is an abundant number, since it is smaller than the sum of its proper divisors (17395110).

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

13949658 is an equidigital number, since it uses as much as digits as its factorization.

13949658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28720 (or 28708 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 13949658 is about 3734.9240956143. The cubic root of 13949658 is about 240.7249952194.

The spelling of 13949658 in words is "thirteen million, nine hundred forty-nine thousand, six hundred fifty-eight".