13733991 has 6 divisors (see below), whose sum is σ = 19838000. Its totient is φ = 9155988.

The previous prime is 13733981. The next prime is 13733999. The reversal of 13733991 is 19933731.

It is not a de Polignac number, because 13733991 - 2¹⁴ = 13717607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13733999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 762991 + ... + 763008.

Almost surely, 2^13733991 is an apocalyptic number.

13733991 is a deficient number, since it is larger than the sum of its proper divisors (6104009).

13733991 is a wasteful number, since it uses less digits than its factorization.

13733991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526005 (or 1526002 counting only the distinct ones).

The product of its digits is 15309, while the sum is 36.

The square root of 13733991 is about 3705.9399617371. The cubic root of 13733991 is about 239.4779799694.

The spelling of 13733991 in words is "thirteen million, seven hundred thirty-three thousand, nine hundred ninety-one".