30799849 has 4 divisors (see below), whose sum is σ = 31104900. Its totient is φ = 30494800.

The previous prime is 30799819. The next prime is 30799861. The reversal of 30799849 is 94899703.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18147600 + 12652249 = 4260^2 + 3557^2 .

It is a cyclic number.

It is not a de Polignac number, because 30799849 - 2⁷ = 30799721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30799819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152374 + ... + 152575.

It is an arithmetic number, because the mean of its divisors is an integer number (7776225).

Almost surely, 2^30799849 is an apocalyptic number.

It is an amenable number.

30799849 is a deficient number, since it is larger than the sum of its proper divisors (305051).

30799849 is a wasteful number, since it uses less digits than its factorization.

30799849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305050.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 30799849 is about 5549.7611660323. The cubic root of 30799849 is about 313.4605291895.

The spelling of 30799849 in words is "thirty million, seven hundred ninety-nine thousand, eight hundred forty-nine".