13400985 has 32 divisors (see below), whose sum is σ = 24312960. Its totient is φ = 6248448.

The previous prime is 13400971. The next prime is 13401041. The reversal of 13400985 is 58900431.

It is not a de Polignac number, because 13400985 - 2⁶ = 13400921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1897 + ... + 5513.

It is an arithmetic number, because the mean of its divisors is an integer number (759780).

Almost surely, 2^13400985 is an apocalyptic number.

13400985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13400985 is a deficient number, since it is larger than the sum of its proper divisors (10911975).

13400985 is a wasteful number, since it uses less digits than its factorization.

13400985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13400985 is about 3660.7355818196. The cubic root of 13400985 is about 237.5265935134.

The spelling of 13400985 in words is "thirteen million, four hundred thousand, nine hundred eighty-five".