13945771 has 8 divisors (see below), whose sum is σ = 16208640. Its totient is φ = 11750568.

The previous prime is 13945769. The next prime is 13945783. The reversal of 13945771 is 17754931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13945771 - 2¹ = 13945769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13945771.

It is not an unprimeable number, because it can be changed into a prime (13945741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16471 + ... + 17296.

It is an arithmetic number, because the mean of its divisors is an integer number (2026080).

Almost surely, 2^13945771 is an apocalyptic number.

13945771 is a deficient number, since it is larger than the sum of its proper divisors (2262869).

13945771 is an equidigital number, since it uses as much as digits as its factorization.

13945771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33833.

The product of its digits is 26460, while the sum is 37.

The square root of 13945771 is about 3734.4037007265. The cubic root of 13945771 is about 240.7026342177.

The spelling of 13945771 in words is "thirteen million, nine hundred forty-five thousand, seven hundred seventy-one".