865199480 has 32 divisors (see below), whose sum is σ = 1948676400. Its totient is φ = 345728256.

The previous prime is 865199477. The next prime is 865199483. The reversal of 865199480 is 84991568.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (865199477) and next prime (865199483).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865199483) 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, 30851 + ... + 51789.

Almost surely, 2^865199480 is an apocalyptic number.

It is an amenable number.

865199480 is an abundant number, since it is smaller than the sum of its proper divisors (1083476920).

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

865199480 is a wasteful number, since it uses less digits than its factorization.

865199480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21983 (or 21979 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 865199480 is about 29414.2734059504. The cubic root of 865199480 is about 952.8811810345.

The spelling of 865199480 in words is "eight hundred sixty-five million, one hundred ninety-nine thousand, four hundred eighty".