29989457 has 2 divisors, whose sum is σ = 29989458. Its totient is φ = 29989456.

The previous prime is 29989441. The next prime is 29989489. The reversal of 29989457 is 75498992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28987456 + 1002001 = 5384^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 29989457 - 2⁴ = 29989441 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 29989399 and 29989408.

It is not a weakly prime, because it can be changed into another prime (29989417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14994728 + 14994729.

It is an arithmetic number, because the mean of its divisors is an integer number (14994729).

Almost surely, 2^29989457 is an apocalyptic number.

It is an amenable number.

29989457 is a deficient number, since it is larger than the sum of its proper divisors (1).

29989457 is an equidigital number, since it uses as much as digits as its factorization.

29989457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The square root of 29989457 is about 5476.2630506578. The cubic root of 29989457 is about 310.6868468280.

The spelling of 29989457 in words is "twenty-nine million, nine hundred eighty-nine thousand, four hundred fifty-seven".