820442486 has 8 divisors (see below), whose sum is σ = 1234596504. Its totient is φ = 408910320.

The previous prime is 820442461. The next prime is 820442527. The reversal of 820442486 is 684244028.

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

It is a congruent number.

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, 654680 + ... + 655931.

It is an arithmetic number, because the mean of its divisors is an integer number (154324563).

Almost surely, 2^820442486 is an apocalyptic number.

820442486 is a deficient number, since it is larger than the sum of its proper divisors (414154018).

820442486 is a wasteful number, since it uses less digits than its factorization.

820442486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310926.

The product of its (nonzero) digits is 98304, while the sum is 38.

The square root of 820442486 is about 28643.3672252408. The cubic root of 820442486 is about 936.1584907974.

The spelling of 820442486 in words is "eight hundred twenty million, four hundred forty-two thousand, four hundred eighty-six".