30473989 has 16 divisors (see below), whose sum is σ = 37636480. Its totient is φ = 24027840.

The previous prime is 30473969. The next prime is 30473999. The reversal of 30473989 is 98937403.

It is a cyclic number.

It is not a de Polignac number, because 30473989 - 2¹⁵ = 30441221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30473909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48922 + ... + 49540.

It is an arithmetic number, because the mean of its divisors is an integer number (2352280).

Almost surely, 2^30473989 is an apocalyptic number.

It is an amenable number.

30473989 is a deficient number, since it is larger than the sum of its proper divisors (7162491).

30473989 is a wasteful number, since it uses less digits than its factorization.

30473989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 30473989 is about 5520.3250810075. The cubic root of 30473989 is about 312.3511448928.

The spelling of 30473989 in words is "thirty million, four hundred seventy-three thousand, nine hundred eighty-nine".