84989929 has 2 divisors, whose sum is σ = 84989930. Its totient is φ = 84989928.

The previous prime is 84989921. The next prime is 84990001. The reversal of 84989929 is 92998948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78854400 + 6135529 = 8880^2 + 2477^2 .

It is a cyclic number.

It is not a de Polignac number, because 84989929 - 2³ = 84989921 is a prime.

It is not a weakly prime, because it can be changed into another prime (84989921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42494964 + 42494965.

It is an arithmetic number, because the mean of its divisors is an integer number (42494965).

Almost surely, 2^84989929 is an apocalyptic number.

It is an amenable number.

84989929 is a deficient number, since it is larger than the sum of its proper divisors (1).

84989929 is an equidigital number, since it uses as much as digits as its factorization.

84989929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 58.

The square root of 84989929 is about 9218.9982644537. The cubic root of 84989929 is about 439.6656016391.

The spelling of 84989929 in words is "eighty-four million, nine hundred eighty-nine thousand, nine hundred twenty-nine".