13777993 has 4 divisors (see below), whose sum is σ = 13789440. Its totient is φ = 13766548.

The previous prime is 13777979. The next prime is 13778029. The reversal of 13777993 is 39977731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13777993 - 2⁵ = 13777961 is a prime.

It is a super-2 number, since 2×13777993² = 379666182216098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13777913) 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 3 ways as a sum of consecutive naturals, for example, 3673 + ... + 6406.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 2^13777993 is an apocalyptic number.

It is an amenable number.

13777993 is a deficient number, since it is larger than the sum of its proper divisors (11447).

13777993 is a wasteful number, since it uses less digits than its factorization.

13777993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11446.

The product of its digits is 250047, while the sum is 46.

The square root of 13777993 is about 3711.8718997293. The cubic root of 13777993 is about 239.7334598815.

The spelling of 13777993 in words is "thirteen million, seven hundred seventy-seven thousand, nine hundred ninety-three".