840996351 has 20 divisors (see below), whose sum is σ = 1352943592. Its totient is φ = 517535568.

The previous prime is 840996337. The next prime is 840996389. The reversal of 840996351 is 153699048.

It is a happy number.

840996351 is a `hidden beast` number, since 8 + 4 + 0 + 9 + 9 + 635 + 1 = 666.

It is not a de Polignac number, because 840996351 - 2¹⁰ = 840995327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 840996297 and 840996306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840996301) 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, 398281 + ... + 400386.

Almost surely, 2^840996351 is an apocalyptic number.

840996351 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

840996351 is a deficient number, since it is larger than the sum of its proper divisors (511947241).

840996351 is a wasteful number, since it uses less digits than its factorization.

840996351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798692 (or 798683 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 840996351 is about 28999.9370861387. The cubic root of 840996351 is about 943.9117025614.

The spelling of 840996351 in words is "eight hundred forty million, nine hundred ninety-six thousand, three hundred fifty-one".