863749146 has 16 divisors (see below), whose sum is σ = 1860382944. Its totient is φ = 265768944.

The previous prime is 863749129. The next prime is 863749147. The reversal of 863749146 is 641947368.

It is a junction number, because it is equal to n+sod(n) for n = 863749095 and 863749104.

It is not an unprimeable number, because it can be changed into a prime (863749147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5536776 + ... + 5536931.

It is an arithmetic number, because the mean of its divisors is an integer number (116273934).

Almost surely, 2^863749146 is an apocalyptic number.

863749146 is an abundant number, since it is smaller than the sum of its proper divisors (996633798).

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

863749146 is a wasteful number, since it uses less digits than its factorization.

863749146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073725.

The product of its digits is 870912, while the sum is 48.

The square root of 863749146 is about 29389.6094904305. The cubic root of 863749146 is about 952.3484449661.

The spelling of 863749146 in words is "eight hundred sixty-three million, seven hundred forty-nine thousand, one hundred forty-six".