13948857 has 24 divisors (see below), whose sum is σ = 22977864. Its totient is φ = 8077824.

The previous prime is 13948843. The next prime is 13948859. The reversal of 13948857 is 75884931.

It can be written as a sum of positive squares in 4 ways, for example, as 3606201 + 10342656 = 1899^2 + 3216^2 .

It is not a de Polignac number, because 13948857 - 2⁸ = 13948601 is a prime.

It is a super-2 number, since 2×13948857² = 389141223212898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13948859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1518 + ... + 5495.

It is an arithmetic number, because the mean of its divisors is an integer number (957411).

Almost surely, 2^13948857 is an apocalyptic number.

13948857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13948857 is a deficient number, since it is larger than the sum of its proper divisors (9029007).

13948857 is a wasteful number, since it uses less digits than its factorization.

13948857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7049 (or 7046 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 13948857 is about 3734.8168629800. The cubic root of 13948857 is about 240.7203875937.

The spelling of 13948857 in words is "thirteen million, nine hundred forty-eight thousand, eight hundred fifty-seven".