863899452 has 48 divisors (see below), whose sum is σ = 2412030880. Its totient is φ = 265814784.

The previous prime is 863899451. The next prime is 863899493. The reversal of 863899452 is 254998368.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863899451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306253 + ... + 309060.

Almost surely, 2^863899452 is an apocalyptic number.

It is an amenable number.

863899452 is an abundant number, since it is smaller than the sum of its proper divisors (1548131428).

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

863899452 is a wasteful number, since it uses less digits than its factorization.

863899452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615339 (or 615331 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 863899452 is about 29392.1665074217. The cubic root of 863899452 is about 952.4036829881.

The spelling of 863899452 in words is "eight hundred sixty-three million, eight hundred ninety-nine thousand, four hundred fifty-two".