85290490 has 8 divisors (see below), whose sum is σ = 153522900. Its totient is φ = 34116192.

The previous prime is 85290481. The next prime is 85290493. The reversal of 85290490 is 9409258.

It can be written as a sum of positive squares in 2 ways, for example, as 81018001 + 4272489 = 9001^2 + 2067^2 .

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 (85290493) 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, 4264515 + ... + 4264534.

Almost surely, 2^85290490 is an apocalyptic number.

85290490 is a deficient number, since it is larger than the sum of its proper divisors (68232410).

85290490 is a wasteful number, since it uses less digits than its factorization.

85290490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8529056.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 85290490 is about 9235.2850524497. The cubic root of 85290490 is about 440.1832742007.

The spelling of 85290490 in words is "eighty-five million, two hundred ninety thousand, four hundred ninety".