29774989 has 2 divisors, whose sum is σ = 29774990. Its totient is φ = 29774988.

The previous prime is 29774981. The next prime is 29774993. The reversal of 29774989 is 98947792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25502500 + 4272489 = 5050^2 + 2067^2 .

It is a cyclic number.

It is not a de Polignac number, because 29774989 - 2³ = 29774981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29774981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14887494 + 14887495.

It is an arithmetic number, because the mean of its divisors is an integer number (14887495).

Almost surely, 2^29774989 is an apocalyptic number.

It is an amenable number.

29774989 is a deficient number, since it is larger than the sum of its proper divisors (1).

29774989 is an equidigital number, since it uses as much as digits as its factorization.

29774989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 55.

The square root of 29774989 is about 5456.6463143583. The cubic root of 29774989 is about 309.9444541478.

The spelling of 29774989 in words is "twenty-nine million, seven hundred seventy-four thousand, nine hundred eighty-nine".