84834749 has 2 divisors, whose sum is σ = 84834750. Its totient is φ = 84834748.

The previous prime is 84834721. The next prime is 84834767. The reversal of 84834749 is 94743848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84309124 + 525625 = 9182^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 84834749 - 2⁸ = 84834493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84834049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42417374 + 42417375.

It is an arithmetic number, because the mean of its divisors is an integer number (42417375).

Almost surely, 2^84834749 is an apocalyptic number.

It is an amenable number.

84834749 is a deficient number, since it is larger than the sum of its proper divisors (1).

84834749 is an equidigital number, since it uses as much as digits as its factorization.

84834749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 47.

The square root of 84834749 is about 9210.5781034634. The cubic root of 84834749 is about 439.3978488374.

Subtracting 84834749 from its reverse (94743848), we obtain a palindrome (9909099).

The spelling of 84834749 in words is "eighty-four million, eight hundred thirty-four thousand, seven hundred forty-nine".