840554901 has 20 divisors (see below), whose sum is σ = 1262241024. Its totient is φ = 557425800.

The previous prime is 840554867. The next prime is 840554903. The reversal of 840554901 is 109455048.

840554901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840554901 - 2⁷ = 840554773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840554903) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11695 + ... + 42636.

Almost surely, 2^840554901 is an apocalyptic number.

840554901 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

840554901 is a deficient number, since it is larger than the sum of its proper divisors (421686123).

840554901 is a wasteful number, since it uses less digits than its factorization.

840554901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54534 (or 54525 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 840554901 is about 28992.3248636600. The cubic root of 840554901 is about 943.7465164499.

The spelling of 840554901 in words is "eight hundred forty million, five hundred fifty-four thousand, nine hundred one".