29970919 has 4 divisors (see below), whose sum is σ = 32695560. Its totient is φ = 27246280.

The previous prime is 29970911. The next prime is 29970929. The reversal of 29970919 is 91907992.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29970919 - 2³ = 29970911 is a prime.

It is a super-2 number, since 2×29970919² = 1796511971409122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29970911) 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, 1362304 + ... + 1362325.

It is an arithmetic number, because the mean of its divisors is an integer number (8173890).

Almost surely, 2^29970919 is an apocalyptic number.

29970919 is a deficient number, since it is larger than the sum of its proper divisors (2724641).

29970919 is a wasteful number, since it uses less digits than its factorization.

29970919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724640.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 29970919 is about 5474.5702114413. The cubic root of 29970919 is about 310.6228165487.

The spelling of 29970919 in words is "twenty-nine million, nine hundred seventy thousand, nine hundred nineteen".