85390797 has 4 divisors (see below), whose sum is σ = 113854400. Its totient is φ = 56927196.

The previous prime is 85390793. The next prime is 85390841. The reversal of 85390797 is 79709358.

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 not a de Polignac number, because 85390797 - 2² = 85390793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85390793) 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, 14231797 + ... + 14231802.

It is an arithmetic number, because the mean of its divisors is an integer number (28463600).

Almost surely, 2^85390797 is an apocalyptic number.

It is an amenable number.

85390797 is a deficient number, since it is larger than the sum of its proper divisors (28463603).

85390797 is a wasteful number, since it uses less digits than its factorization.

85390797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28463602.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 85390797 is about 9240.7140957829. The cubic root of 85390797 is about 440.3557677027.

The spelling of 85390797 in words is "eighty-five million, three hundred ninety thousand, seven hundred ninety-seven".