30972899 has 8 divisors (see below), whose sum is σ = 32130000. Its totient is φ = 29821792.

The previous prime is 30972889. The next prime is 30972911. The reversal of 30972899 is 99827903.

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 30972899 - 2⁴ = 30972883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30972889) 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, 10877 + ... + 13425.

It is an arithmetic number, because the mean of its divisors is an integer number (4016250).

Almost surely, 2^30972899 is an apocalyptic number.

30972899 is a deficient number, since it is larger than the sum of its proper divisors (1157101).

30972899 is a wasteful number, since it uses less digits than its factorization.

30972899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 30972899 is about 5565.3300890423. The cubic root of 30972899 is about 314.0464960154.

It can be divided in two parts, 3097 and 2899, that multiplied together give a triangular number (8978203 = T₄₂₃₇).

The spelling of 30972899 in words is "thirty million, nine hundred seventy-two thousand, eight hundred ninety-nine".