27943797 has 16 divisors (see below), whose sum is σ = 42997760. Its totient is φ = 15811632.

The previous prime is 27943793. The next prime is 27943819. The reversal of 27943797 is 79734972.

It is a happy number.

It is not a de Polignac number, because 27943797 - 2² = 27943793 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 (27943793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4297 + ... + 8622.

It is an arithmetic number, because the mean of its divisors is an integer number (2687360).

Almost surely, 2^27943797 is an apocalyptic number.

It is an amenable number.

27943797 is a deficient number, since it is larger than the sum of its proper divisors (15053963).

27943797 is a wasteful number, since it uses less digits than its factorization.

27943797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032.

The product of its digits is 666792, while the sum is 48.

The square root of 27943797 is about 5286.1892701643. The cubic root of 27943797 is about 303.4555879889.

The spelling of 27943797 in words is "twenty-seven million, nine hundred forty-three thousand, seven hundred ninety-seven".