861480442 has 4 divisors (see below), whose sum is σ = 1292220666. Its totient is φ = 430740220.

The previous prime is 861480419. The next prime is 861480461. The reversal of 861480442 is 244084168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 808321761 + 53158681 = 28431^2 + 7291^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215370109 + ... + 215370112.

Almost surely, 2^861480442 is an apocalyptic number.

861480442 is a deficient number, since it is larger than the sum of its proper divisors (430740224).

861480442 is a wasteful number, since it uses less digits than its factorization.

861480442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430740223.

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 861480442 is about 29350.9870702844. The cubic root of 861480442 is about 951.5139082414.

The spelling of 861480442 in words is "eight hundred sixty-one million, four hundred eighty thousand, four hundred forty-two".