13952991 has 16 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 8463840.

The previous prime is 13952947. The next prime is 13952999. The reversal of 13952991 is 19925931.

It is not a de Polignac number, because 13952991 - 2⁷ = 13952863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13952999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^13952991 is an apocalyptic number.

13952991 is a deficient number, since it is larger than the sum of its proper divisors (6368289).

13952991 is a wasteful number, since it uses less digits than its factorization.

13952991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126.

The product of its digits is 21870, while the sum is 39.

The square root of 13952991 is about 3735.3702627718. The cubic root of 13952991 is about 240.7441658810.

The spelling of 13952991 in words is "thirteen million, nine hundred fifty-two thousand, nine hundred ninety-one".