29864981 has 2 divisors, whose sum is σ = 29864982. Its totient is φ = 29864980.

The previous prime is 29864927. The next prime is 29864999. The reversal of 29864981 is 18946892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23280625 + 6584356 = 4825^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 29864981 - 2¹⁴ = 29848597 is a prime.

It is a super-2 number, since 2×29864981² = 1783834180260722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29864911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14932490 + 14932491.

It is an arithmetic number, because the mean of its divisors is an integer number (14932491).

Almost surely, 2^29864981 is an apocalyptic number.

It is an amenable number.

29864981 is a deficient number, since it is larger than the sum of its proper divisors (1).

29864981 is an equidigital number, since it uses as much as digits as its factorization.

29864981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 47.

The square root of 29864981 is about 5464.8861836272. The cubic root of 29864981 is about 310.2563990444.

The spelling of 29864981 in words is "twenty-nine million, eight hundred sixty-four thousand, nine hundred eighty-one".