30468989 has 4 divisors (see below), whose sum is σ = 32072640. Its totient is φ = 28865340.

The previous prime is 30468979. The next prime is 30469007. The reversal of 30468989 is 98986403.

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: 98986403 = 67 ⋅1477409.

It is a cyclic number.

It is not a de Polignac number, because 30468989 - 2⁸ = 30468733 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 (30468979) 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, 801797 + ... + 801834.

It is an arithmetic number, because the mean of its divisors is an integer number (8018160).

Almost surely, 2^30468989 is an apocalyptic number.

It is an amenable number.

30468989 is a deficient number, since it is larger than the sum of its proper divisors (1603651).

30468989 is a wasteful number, since it uses less digits than its factorization.

30468989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603650.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 30468989 is about 5519.8721905493. The cubic root of 30468989 is about 312.3340610212.

The spelling of 30468989 in words is "thirty million, four hundred sixty-eight thousand, nine hundred eighty-nine".