30949797 has 8 divisors (see below), whose sum is σ = 42381856. Its totient is φ = 20075472.

The previous prime is 30949781. The next prime is 30949859. The reversal of 30949797 is 79794903.

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

It is not a de Polignac number, because 30949797 - 2⁴ = 30949781 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 (30949717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139303 + ... + 139524.

It is an arithmetic number, because the mean of its divisors is an integer number (5297732).

Almost surely, 2^30949797 is an apocalyptic number.

30949797 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30949797 is a deficient number, since it is larger than the sum of its proper divisors (11432059).

30949797 is a wasteful number, since it uses less digits than its factorization.

30949797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278867.

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 30949797 is about 5563.2541735930. The cubic root of 30949797 is about 313.9683964839.

The spelling of 30949797 in words is "thirty million, nine hundred forty-nine thousand, seven hundred ninety-seven".