13977907 has 4 divisors (see below), whose sum is σ = 13996456. Its totient is φ = 13959360.

The previous prime is 13977889. The next prime is 13977917. The reversal of 13977907 is 70977931.

It is a happy number.

13977907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13977907 - 2⁷ = 13977779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13977917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8094 + ... + 9667.

It is an arithmetic number, because the mean of its divisors is an integer number (3499114).

Almost surely, 2^13977907 is an apocalyptic number.

13977907 is a deficient number, since it is larger than the sum of its proper divisors (18549).

13977907 is an equidigital number, since it uses as much as digits as its factorization.

13977907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18548.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 13977907 is about 3738.7039198096. The cubic root of 13977907 is about 240.8873804486.

It can be divided in two parts, 13977 and 907, that added together give a square (14884 = 122²).

The spelling of 13977907 in words is "thirteen million, nine hundred seventy-seven thousand, nine hundred seven".