842791469 has 4 divisors (see below), whose sum is σ = 907621596. Its totient is φ = 777961344.

The previous prime is 842791457. The next prime is 842791483. The reversal of 842791469 is 964197248.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60918025 + 781873444 = 7805^2 + 27962^2 .

It is a cyclic number.

It is not a de Polignac number, because 842791469 - 2²⁴ = 826014253 is a prime.

It is a super-2 number, since 2×842791469² = 1420594920438355922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842791489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32415044 + ... + 32415069.

It is an arithmetic number, because the mean of its divisors is an integer number (226905399).

Almost surely, 2^842791469 is an apocalyptic number.

It is an amenable number.

842791469 is a deficient number, since it is larger than the sum of its proper divisors (64830127).

842791469 is a wasteful number, since it uses less digits than its factorization.

842791469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64830126.

The product of its digits is 870912, while the sum is 50.

The square root of 842791469 is about 29030.8709652329. The cubic root of 842791469 is about 944.5828226824.

The spelling of 842791469 in words is "eight hundred forty-two million, seven hundred ninety-one thousand, four hundred sixty-nine".