13975890 has 32 divisors (see below), whose sum is σ = 33972480. Its totient is φ = 3679104.

The previous prime is 13975889. The next prime is 13975901. The reversal of 13975890 is 9857931.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579 + ... + 5318.

It is an arithmetic number, because the mean of its divisors is an integer number (1061640).

Almost surely, 2^13975890 is an apocalyptic number.

13975890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13975890 is an abundant number, since it is smaller than the sum of its proper divisors (19996590).

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

13975890 is a wasteful number, since it uses less digits than its factorization.

13975890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5986.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 13975890 is about 3738.4341641923. The cubic root of 13975890 is about 240.8757932770.

The spelling of 13975890 in words is "thirteen million, nine hundred seventy-five thousand, eight hundred ninety".