840901834 has 8 divisors (see below), whose sum is σ = 1261542528. Its totient is φ = 420387660.

The previous prime is 840901823. The next prime is 840901837. The reversal of 840901834 is 438109048.

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 = 840901793 and 840901802.

It is not an unprimeable number, because it can be changed into a prime (840901837) 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, 12762 + ... + 42949.

It is an arithmetic number, because the mean of its divisors is an integer number (157692816).

Almost surely, 2^840901834 is an apocalyptic number.

840901834 is a deficient number, since it is larger than the sum of its proper divisors (420640694).

840901834 is a wasteful number, since it uses less digits than its factorization.

840901834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63260.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 840901834 is about 28998.3074333658. The cubic root of 840901834 is about 943.8763401230.

The spelling of 840901834 in words is "eight hundred forty million, nine hundred one thousand, eight hundred thirty-four".