84949651 has 2 divisors, whose sum is σ = 84949652. Its totient is φ = 84949650.

The previous prime is 84949643. The next prime is 84949687. The reversal of 84949651 is 15694948.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84949651 - 2³ = 84949643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84949451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42474825 + 42474826.

It is an arithmetic number, because the mean of its divisors is an integer number (42474826).

Almost surely, 2^84949651 is an apocalyptic number.

84949651 is a deficient number, since it is larger than the sum of its proper divisors (1).

84949651 is an equidigital number, since it uses as much as digits as its factorization.

84949651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 84949651 is about 9216.8134949124. The cubic root of 84949651 is about 439.5961359603.

It can be divided in two parts, 8494 and 9651, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 84949651 in words is "eighty-four million, nine hundred forty-nine thousand, six hundred fifty-one".