840890954 has 8 divisors (see below), whose sum is σ = 1267739748. Its totient is φ = 418311040.

The previous prime is 840890933. The next prime is 840890983. The reversal of 840890954 is 459098048.

It can be written as a sum of positive squares in 2 ways, for example, as 825010729 + 15880225 = 28723^2 + 3985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 840890899 and 840890908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066727 + ... + 1067514.

Almost surely, 2^840890954 is an apocalyptic number.

840890954 is a deficient number, since it is larger than the sum of its proper divisors (426848794).

840890954 is a wasteful number, since it uses less digits than its factorization.

840890954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134440.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 840890954 is about 28998.1198356031. The cubic root of 840890954 is about 943.8722693273.

The spelling of 840890954 in words is "eight hundred forty million, eight hundred ninety thousand, nine hundred fifty-four".