85391378 has 8 divisors (see below), whose sum is σ = 131065968. Its totient is φ = 41702724.

The previous prime is 85391333. The next prime is 85391431. The reversal of 85391378 is 87319358.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496376 + ... + 496547.

It is an arithmetic number, because the mean of its divisors is an integer number (16383246).

Almost surely, 2^85391378 is an apocalyptic number.

85391378 is a deficient number, since it is larger than the sum of its proper divisors (45674590).

85391378 is a wasteful number, since it uses less digits than its factorization.

85391378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992968.

The product of its digits is 181440, while the sum is 44.

The square root of 85391378 is about 9240.7455326938. The cubic root of 85391378 is about 440.3567664290.

The spelling of 85391378 in words is "eighty-five million, three hundred ninety-one thousand, three hundred seventy-eight".