85490040 has 32 divisors (see below), whose sum is σ = 256470480. Its totient is φ = 22797312.

The previous prime is 85490029. The next prime is 85490071. The reversal of 85490040 is 4009458.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356089 + ... + 356328.

Almost surely, 2^85490040 is an apocalyptic number.

It is an amenable number.

85490040 is an abundant number, since it is smaller than the sum of its proper divisors (170980440).

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

85490040 is a wasteful number, since it uses less digits than its factorization.

85490040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712431 (or 712427 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 85490040 is about 9246.0824136496. The cubic root of 85490040 is about 440.5262986004.

Adding to 85490040 its reverse (4009458), we get a palindrome (89499498).

The spelling of 85490040 in words is "eighty-five million, four hundred ninety thousand, forty".