13981395 has 16 divisors (see below), whose sum is σ = 23686560. Its totient is φ = 7017984.

The previous prime is 13981381. The next prime is 13981399. The reversal of 13981395 is 59318931.

It is not a de Polignac number, because 13981395 - 2⁴ = 13981379 is a prime.

It is a super-2 number, since 2×13981395² = 390958812292050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13981399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27160 + ... + 27669.

It is an arithmetic number, because the mean of its divisors is an integer number (1480410).

Almost surely, 2^13981395 is an apocalyptic number.

13981395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13981395 is a deficient number, since it is larger than the sum of its proper divisors (9705165).

13981395 is a wasteful number, since it uses less digits than its factorization.

13981395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54854.

The product of its digits is 29160, while the sum is 39.

The square root of 13981395 is about 3739.1703625270. The cubic root of 13981395 is about 240.9074155250.

The spelling of 13981395 in words is "thirteen million, nine hundred eighty-one thousand, three hundred ninety-five".