30899893 has 8 divisors (see below), whose sum is σ = 31521600. Its totient is φ = 30281568.

The previous prime is 30899873. The next prime is 30899899. The reversal of 30899893 is 39899803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30899893 - 2⁹ = 30899381 is a prime.

It is a super-2 number, since 2×30899893² = 1909606774822898, which 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 (30899899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25305 + ... + 26497.

It is an arithmetic number, because the mean of its divisors is an integer number (3940200).

Almost surely, 2^30899893 is an apocalyptic number.

It is an amenable number.

30899893 is a deficient number, since it is larger than the sum of its proper divisors (621707).

30899893 is a wasteful number, since it uses less digits than its factorization.

30899893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 30899893 is about 5558.7672194471. The cubic root of 30899893 is about 313.7995563062.

The spelling of 30899893 in words is "thirty million, eight hundred ninety-nine thousand, eight hundred ninety-three".