840369601 has 4 divisors (see below), whose sum is σ = 884599600. Its totient is φ = 796139604.

The previous prime is 840369581. The next prime is 840369613. The reversal of 840369601 is 106963048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840369601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840369301) 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, 22114971 + ... + 22115008.

It is an arithmetic number, because the mean of its divisors is an integer number (221149900).

Almost surely, 2^840369601 is an apocalyptic number.

It is an amenable number.

840369601 is a deficient number, since it is larger than the sum of its proper divisors (44229999).

840369601 is a wasteful number, since it uses less digits than its factorization.

840369601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44229998.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 840369601 is about 28989.1290141667. The cubic root of 840369601 is about 943.6771618361.

The spelling of 840369601 in words is "eight hundred forty million, three hundred sixty-nine thousand, six hundred one".