85876403749 has 2 divisors, whose sum is σ = 85876403750. Its totient is φ = 85876403748.

The previous prime is 85876403713. The next prime is 85876403773. The reversal of 85876403749 is 94730467858.

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., 82099440900 + 3776962849 = 286530^2 + 61457^2 .

It is a cyclic number.

It is not a de Polignac number, because 85876403749 - 2¹⁹ = 85875879461 is a prime.

It is a super-2 number, since 2×85876403749² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85876400749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42938201874 + 42938201875.

It is an arithmetic number, because the mean of its divisors is an integer number (42938201875).

Almost surely, 2^85876403749 is an apocalyptic number.

It is an amenable number.

85876403749 is a deficient number, since it is larger than the sum of its proper divisors (1).

85876403749 is an equidigital number, since it uses as much as digits as its factorization.

85876403749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40642560, while the sum is 61.

The spelling of 85876403749 in words is "eighty-five billion, eight hundred seventy-six million, four hundred three thousand, seven hundred forty-nine".