85540398 has 8 divisors (see below), whose sum is σ = 171080808. Its totient is φ = 28513464.

The previous prime is 85540397. The next prime is 85540409. The reversal of 85540398 is 89304558.

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

85540398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85540393) 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, 7128361 + ... + 7128372.

It is an arithmetic number, because the mean of its divisors is an integer number (21385101).

Almost surely, 2^85540398 is an apocalyptic number.

85540398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85540398 is a wasteful number, since it uses less digits than its factorization.

85540398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14256738.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 85540398 is about 9248.8052201352. The cubic root of 85540398 is about 440.6127791188.

The spelling of 85540398 in words is "eighty-five million, five hundred forty thousand, three hundred ninety-eight".