29070869 has 2 divisors, whose sum is σ = 29070870. Its totient is φ = 29070868.

The previous prime is 29070857. The next prime is 29070883. The reversal of 29070869 is 96807092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29052100 + 18769 = 5390^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 29070869 - 2¹² = 29066773 is a prime.

It is a super-2 number, since 2×29070869² = 1690230848830322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29070809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14535434 + 14535435.

It is an arithmetic number, because the mean of its divisors is an integer number (14535435).

Almost surely, 2^29070869 is an apocalyptic number.

It is an amenable number.

29070869 is a deficient number, since it is larger than the sum of its proper divisors (1).

29070869 is an equidigital number, since it uses as much as digits as its factorization.

29070869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 29070869 is about 5391.7408135036. The cubic root of 29070869 is about 307.4817456721.

The spelling of 29070869 in words is "twenty-nine million, seventy thousand, eight hundred sixty-nine".