863890494 has 16 divisors (see below), whose sum is σ = 1728960768. Its totient is φ = 287766872.

The previous prime is 863890481. The next prime is 863890543. The reversal of 863890494 is 494098368.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39492 + ... + 57335.

It is an arithmetic number, because the mean of its divisors is an integer number (108060048).

Almost surely, 2^863890494 is an apocalyptic number.

863890494 is an abundant number, since it is smaller than the sum of its proper divisors (865070274).

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

863890494 is a wasteful number, since it uses less digits than its factorization.

863890494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98319.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 863890494 is about 29392.0141194849. The cubic root of 863890494 is about 952.4003910689.

The spelling of 863890494 in words is "eight hundred sixty-three million, eight hundred ninety thousand, four hundred ninety-four".