29979949 has 2 divisors, whose sum is σ = 29979950. Its totient is φ = 29979948.

The previous prime is 29979941. The next prime is 29979977. The reversal of 29979949 is 94997992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 59049 = 5470^2 + 243^2 .

It is a cyclic number.

It is not a de Polignac number, because 29979949 - 2³ = 29979941 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 29979893 and 29979902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29979941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14989974 + 14989975.

It is an arithmetic number, because the mean of its divisors is an integer number (14989975).

Almost surely, 2^29979949 is an apocalyptic number.

It is an amenable number.

29979949 is a deficient number, since it is larger than the sum of its proper divisors (1).

29979949 is an equidigital number, since it uses as much as digits as its factorization.

29979949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3306744, while the sum is 58.

The square root of 29979949 is about 5475.3948716052. The cubic root of 29979949 is about 310.6540094792.

The spelling of 29979949 in words is "twenty-nine million, nine hundred seventy-nine thousand, nine hundred forty-nine".