29979045 has 16 divisors (see below), whose sum is σ = 53296320. Its totient is φ = 15988752.

The previous prime is 29979043. The next prime is 29979073. The reversal of 29979045 is 54097992.

It is not a de Polignac number, because 29979045 - 2¹ = 29979043 is a prime.

It is a super-2 number, since 2×29979045² = 1797486278224050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29979043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110899 + ... + 111168.

It is an arithmetic number, because the mean of its divisors is an integer number (3331020).

Almost surely, 2^29979045 is an apocalyptic number.

It is an amenable number.

29979045 is a deficient number, since it is larger than the sum of its proper divisors (23317275).

29979045 is a wasteful number, since it uses less digits than its factorization.

29979045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222081 (or 222075 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 29979045 is about 5475.3123198590. The cubic root of 29979045 is about 310.6508870139.

The spelling of 29979045 in words is "twenty-nine million, nine hundred seventy-nine thousand, forty-five".