27491949 has 12 divisors (see below), whose sum is σ = 39942396. Its totient is φ = 18220992.

The previous prime is 27491939. The next prime is 27491951. The reversal of 27491949 is 94919472.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14402025 + 13089924 = 3795^2 + 3618^2 .

It is not a de Polignac number, because 27491949 - 2²⁴ = 10714733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27491929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7272 + ... + 10385.

It is an arithmetic number, because the mean of its divisors is an integer number (3328533).

Almost surely, 2^27491949 is an apocalyptic number.

It is an amenable number.

27491949 is a deficient number, since it is larger than the sum of its proper divisors (12450447).

27491949 is a wasteful number, since it uses less digits than its factorization.

27491949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17836 (or 17833 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 27491949 is about 5243.2765519282. The cubic root of 27491949 is about 301.8110779871.

The spelling of 27491949 in words is "twenty-seven million, four hundred ninety-one thousand, nine hundred forty-nine".