29164021 has 2 divisors, whose sum is σ = 29164022. Its totient is φ = 29164020.

The previous prime is 29164013. The next prime is 29164033. The reversal of 29164021 is 12046192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26635921 + 2528100 = 5161^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 29164021 - 2³ = 29164013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29164001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14582010 + 14582011.

It is an arithmetic number, because the mean of its divisors is an integer number (14582011).

Almost surely, 2^29164021 is an apocalyptic number.

It is an amenable number.

29164021 is a deficient number, since it is larger than the sum of its proper divisors (1).

29164021 is an equidigital number, since it uses as much as digits as its factorization.

29164021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 29164021 is about 5400.3723019807. The cubic root of 29164021 is about 307.8098175155.

The spelling of 29164021 in words is "twenty-nine million, one hundred sixty-four thousand, twenty-one".