29989397 has 2 divisors, whose sum is σ = 29989398. Its totient is φ = 29989396.

The previous prime is 29989387. The next prime is 29989403. The reversal of 29989397 is 79398992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29528356 + 461041 = 5434^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 29989397 - 2⁴ = 29989381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29989357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14994698 + 14994699.

It is an arithmetic number, because the mean of its divisors is an integer number (14994699).

Almost surely, 2^29989397 is an apocalyptic number.

It is an amenable number.

29989397 is a deficient number, since it is larger than the sum of its proper divisors (1).

29989397 is an equidigital number, since it uses as much as digits as its factorization.

29989397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 56.

The square root of 29989397 is about 5476.2575724668. The cubic root of 29989397 is about 310.6866396305.

The spelling of 29989397 in words is "twenty-nine million, nine hundred eighty-nine thousand, three hundred ninety-seven".