85134949 has 2 divisors, whose sum is σ = 85134950. Its totient is φ = 85134948.

The previous prime is 85134919. The next prime is 85134971. The reversal of 85134949 is 94943158.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49350625 + 35784324 = 7025^2 + 5982^2 .

It is a cyclic number.

It is not a de Polignac number, because 85134949 - 2¹³ = 85126757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85134919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42567474 + 42567475.

It is an arithmetic number, because the mean of its divisors is an integer number (42567475).

Almost surely, 2^85134949 is an apocalyptic number.

It is an amenable number.

85134949 is a deficient number, since it is larger than the sum of its proper divisors (1).

85134949 is an equidigital number, since it uses as much as digits as its factorization.

85134949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 85134949 is about 9226.8601918529. The cubic root of 85134949 is about 439.9155295835.

The spelling of 85134949 in words is "eighty-five million, one hundred thirty-four thousand, nine hundred forty-nine".