85400083 has 4 divisors (see below), whose sum is σ = 86183680. Its totient is φ = 84616488.

The previous prime is 85400069. The next prime is 85400087. The reversal of 85400083 is 38000458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38000458 = 2 ⋅19000229.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85400083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85400087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391635 + ... + 391852.

It is an arithmetic number, because the mean of its divisors is an integer number (21545920).

Almost surely, 2^85400083 is an apocalyptic number.

85400083 is a deficient number, since it is larger than the sum of its proper divisors (783597).

85400083 is a wasteful number, since it uses less digits than its factorization.

85400083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783596.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 85400083 is about 9241.2165324702. The cubic root of 85400083 is about 440.3717295923.

The spelling of 85400083 in words is "eighty-five million, four hundred thousand, eighty-three".