863609494 has 16 divisors (see below), whose sum is σ = 1433085696. Its totient is φ = 387020200.

The previous prime is 863609479. The next prime is 863609569. The reversal of 863609494 is 494906368.

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, 274882 + ... + 278005.

It is an arithmetic number, because the mean of its divisors is an integer number (89567856).

Almost surely, 2^863609494 is an apocalyptic number.

863609494 is a deficient number, since it is larger than the sum of its proper divisors (569476202).

863609494 is a wasteful number, since it uses less digits than its factorization.

863609494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552971.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 863609494 is about 29387.2335206974. The cubic root of 863609494 is about 952.2971165860.

The spelling of 863609494 in words is "eight hundred sixty-three million, six hundred nine thousand, four hundred ninety-four".