85440370 has 8 divisors (see below), whose sum is σ = 153792684. Its totient is φ = 34176144.

The previous prime is 85440361. The next prime is 85440379. The reversal of 85440370 is 7304458.

It is an interprime number because it is at equal distance from previous prime (85440361) and next prime (85440379).

It can be written as a sum of positive squares in 2 ways, for example, as 84879369 + 561001 = 9213^2 + 749^2 .

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

It is not an unprimeable number, because it can be changed into a prime (85440379) 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, 4272009 + ... + 4272028.

Almost surely, 2^85440370 is an apocalyptic number.

85440370 is a deficient number, since it is larger than the sum of its proper divisors (68352314).

85440370 is a wasteful number, since it uses less digits than its factorization.

85440370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8544044.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 85440370 is about 9243.3960209438. The cubic root of 85440370 is about 440.4409663198.

The spelling of 85440370 in words is "eighty-five million, four hundred forty thousand, three hundred seventy".