844859402 has 4 divisors (see below), whose sum is σ = 1267289106. Its totient is φ = 422429700.

The previous prime is 844859383. The next prime is 844859413. The reversal of 844859402 is 204958448.

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., 465739561 + 379119841 = 21581^2 + 19471^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211214849 + ... + 211214852.

Almost surely, 2^844859402 is an apocalyptic number.

844859402 is a deficient number, since it is larger than the sum of its proper divisors (422429704).

844859402 is a wasteful number, since it uses less digits than its factorization.

844859402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422429703.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 844859402 is about 29066.4652477731. The cubic root of 844859402 is about 945.3547568335.

The spelling of 844859402 in words is "eight hundred forty-four million, eight hundred fifty-nine thousand, four hundred two".