27974677949 has 8 divisors (see below), whose sum is σ = 30242895840. Its totient is φ = 25786046736.

The previous prime is 27974677937. The next prime is 27974677957. The reversal of 27974677949 is 94977647972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27974677949 - 2⁸ = 27974677693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27974677919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19895939 + ... + 19897344.

It is an arithmetic number, because the mean of its divisors is an integer number (3780361980).

Almost surely, 2^27974677949 is an apocalyptic number.

It is an amenable number.

27974677949 is a deficient number, since it is larger than the sum of its proper divisors (2268217891).

27974677949 is a wasteful number, since it uses less digits than its factorization.

27974677949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39793339.

The product of its digits is 336063168, while the sum is 71.

The spelling of 27974677949 in words is "twenty-seven billion, nine hundred seventy-four million, six hundred seventy-seven thousand, nine hundred forty-nine".