30099312749 has 4 divisors (see below), whose sum is σ = 32835613920. Its totient is φ = 27363011580.

The previous prime is 30099312709. The next prime is 30099312833. The reversal of 30099312749 is 94721399003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30099312749 - 2²⁴ = 30082535533 is a prime.

It is a super-2 number, since 2×30099312749² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30099312709) 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, 1368150569 + ... + 1368150590.

It is an arithmetic number, because the mean of its divisors is an integer number (8208903480).

Almost surely, 2^30099312749 is an apocalyptic number.

It is an amenable number.

30099312749 is a deficient number, since it is larger than the sum of its proper divisors (2736301171).

30099312749 is a wasteful number, since it uses less digits than its factorization.

30099312749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736301170.

The product of its (nonzero) digits is 367416, while the sum is 47.

The spelling of 30099312749 in words is "thirty billion, ninety-nine million, three hundred twelve thousand, seven hundred forty-nine".