29902973 has 4 divisors (see below), whose sum is σ = 30934140. Its totient is φ = 28871808.

The previous prime is 29902933. The next prime is 29902997. The reversal of 29902973 is 37920992.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16345849 + 13557124 = 4043^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 29902973 - 2¹² = 29898877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 29902973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29902913) 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, 515540 + ... + 515597.

It is an arithmetic number, because the mean of its divisors is an integer number (7733535).

Almost surely, 2^29902973 is an apocalyptic number.

It is an amenable number.

29902973 is a deficient number, since it is larger than the sum of its proper divisors (1031167).

29902973 is a wasteful number, since it uses less digits than its factorization.

29902973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031166.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 29902973 is about 5468.3610890284. The cubic root of 29902973 is about 310.3879049750.

The spelling of 29902973 in words is "twenty-nine million, nine hundred two thousand, nine hundred seventy-three".