834990140 has 24 divisors (see below), whose sum is σ = 1769570880. Its totient is φ = 330931008.

The previous prime is 834990103. The next prime is 834990151. The reversal of 834990140 is 41099438.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 834990094 and 834990103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189332 + ... + 193691.

It is an arithmetic number, because the mean of its divisors is an integer number (73732120).

Almost surely, 2^834990140 is an apocalyptic number.

It is an amenable number.

834990140 is an abundant number, since it is smaller than the sum of its proper divisors (934580740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

834990140 is a wasteful number, since it uses less digits than its factorization.

834990140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383141 (or 383139 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 834990140 is about 28896.1959434110. The cubic root of 834990140 is about 941.6592619391.

It can be divided in two parts, 8349 and 90140, that added together give a palindrome (98489).

The spelling of 834990140 in words is "eight hundred thirty-four million, nine hundred ninety thousand, one hundred forty".