30799389 has 4 divisors (see below), whose sum is σ = 41065856. Its totient is φ = 20532924.

The previous prime is 30799313. The next prime is 30799397. The reversal of 30799389 is 98399703.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98399703 = 3 ⋅32799901.

It is not a de Polignac number, because 30799389 - 2¹¹ = 30797341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30794389) 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, 5133229 + ... + 5133234.

It is an arithmetic number, because the mean of its divisors is an integer number (10266464).

Almost surely, 2^30799389 is an apocalyptic number.

It is an amenable number.

30799389 is a deficient number, since it is larger than the sum of its proper divisors (10266467).

30799389 is a wasteful number, since it uses less digits than its factorization.

30799389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266466.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 30799389 is about 5549.7197226527. The cubic root of 30799389 is about 313.4589686563.

The spelling of 30799389 in words is "thirty million, seven hundred ninety-nine thousand, three hundred eighty-nine".