13900785 has 16 divisors (see below), whose sum is σ = 22419456. Its totient is φ = 7354368.

The previous prime is 13900771. The next prime is 13900793. The reversal of 13900785 is 58700931.

It is not a de Polignac number, because 13900785 - 2⁴ = 13900769 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1744 + ... + 5553.

It is an arithmetic number, because the mean of its divisors is an integer number (1401216).

Almost surely, 2^13900785 is an apocalyptic number.

13900785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13900785 is a deficient number, since it is larger than the sum of its proper divisors (8518671).

13900785 is a wasteful number, since it uses less digits than its factorization.

13900785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7432.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 13900785 is about 3728.3756516746. The cubic root of 13900785 is about 240.4435374445.

The spelling of 13900785 in words is "thirteen million, nine hundred thousand, seven hundred eighty-five".