13777946 has 16 divisors (see below), whose sum is σ = 25436544. Its totient is φ = 5450544.

The previous prime is 13777937. The next prime is 13777961. The reversal of 13777946 is 64977731.

It is a super-4 number, since 4×13777946⁴ (a number of 30 digits) contains 4444 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13777897 and 13777906.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37670 + ... + 38033.

It is an arithmetic number, because the mean of its divisors is an integer number (1589784).

Almost surely, 2^13777946 is an apocalyptic number.

13777946 is a deficient number, since it is larger than the sum of its proper divisors (11658598).

13777946 is a wasteful number, since it uses less digits than its factorization.

13777946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75725.

The product of its digits is 222264, while the sum is 44.

The square root of 13777946 is about 3711.8655686865. The cubic root of 13777946 is about 239.7331872853.

The spelling of 13777946 in words is "thirteen million, seven hundred seventy-seven thousand, nine hundred forty-six".