840690050 has 12 divisors (see below), whose sum is σ = 1563683586. Its totient is φ = 336276000.

The previous prime is 840690047. The next prime is 840690079. The reversal of 840690050 is 50096048.

It can be written as a sum of positive squares in 3 ways, for example, as 731215681 + 109474369 = 27041^2 + 10463^2 .

It is a junction number, because it is equal to n+sod(n) for n = 840689989 and 840690016.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8406851 + ... + 8406950.

Almost surely, 2^840690050 is an apocalyptic number.

840690050 is a deficient number, since it is larger than the sum of its proper divisors (722993536).

840690050 is a wasteful number, since it uses less digits than its factorization.

840690050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813813 (or 16813808 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 840690050 is about 28994.6555420133. The cubic root of 840690050 is about 943.7970939761.

The spelling of 840690050 in words is "eight hundred forty million, six hundred ninety thousand, fifty".