27199949 has 12 divisors (see below), whose sum is σ = 33503004. Its totient is φ = 21942144.

The previous prime is 27199919. The next prime is 27199967. The reversal of 27199949 is 94999172.

It can be written as a sum of positive squares in 2 ways, for example, as 16144324 + 11055625 = 4018^2 + 3325^2 .

It is a de Polignac number, because none of the positive numbers 2^k-27199949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27199897 and 27199906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27199919) 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, 15494 + ... + 17159.

It is an arithmetic number, because the mean of its divisors is an integer number (2791917).

Almost surely, 2^27199949 is an apocalyptic number.

It is an amenable number.

27199949 is a deficient number, since it is larger than the sum of its proper divisors (6303055).

27199949 is a wasteful number, since it uses less digits than its factorization.

27199949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32684 (or 32677 counting only the distinct ones).

The product of its digits is 367416, while the sum is 50.

The square root of 27199949 is about 5215.3570347580. The cubic root of 27199949 is about 300.7387312791.

The spelling of 27199949 in words is "twenty-seven million, one hundred ninety-nine thousand, nine hundred forty-nine".