85990361 has 4 divisors (see below), whose sum is σ = 86376192. Its totient is φ = 85604532.

The previous prime is 85990351. The next prime is 85990363. The reversal of 85990361 is 16309958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85990361 - 2¹⁸ = 85728217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85990363) 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, 192581 + ... + 193026.

It is an arithmetic number, because the mean of its divisors is an integer number (21594048).

Almost surely, 2^85990361 is an apocalyptic number.

It is an amenable number.

85990361 is a deficient number, since it is larger than the sum of its proper divisors (385831).

85990361 is a wasteful number, since it uses less digits than its factorization.

85990361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385830.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 85990361 is about 9273.0987808823. The cubic root of 85990361 is about 441.3840047002.

The spelling of 85990361 in words is "eighty-five million, nine hundred ninety thousand, three hundred sixty-one".