30699047 has 4 divisors (see below), whose sum is σ = 30997200. Its totient is φ = 30400896.

The previous prime is 30699013. The next prime is 30699061. The reversal of 30699047 is 74099603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74099603 = 2837 ⋅26119.

It is a cyclic number.

It is not a de Polignac number, because 30699047 - 2²² = 26504743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30699047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30699077) 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, 148922 + ... + 149127.

It is an arithmetic number, because the mean of its divisors is an integer number (7749300).

Almost surely, 2^30699047 is an apocalyptic number.

30699047 is a deficient number, since it is larger than the sum of its proper divisors (298153).

30699047 is a wasteful number, since it uses less digits than its factorization.

30699047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298152.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 30699047 is about 5540.6720711480. The cubic root of 30699047 is about 313.1181900450.

The spelling of 30699047 in words is "thirty million, six hundred ninety-nine thousand, forty-seven".