840701898 has 12 divisors (see below), whose sum is σ = 1821520818. Its totient is φ = 280233960.

The previous prime is 840701893. The next prime is 840701899. The reversal of 840701898 is 898107048.

It can be written as a sum of positive squares in only one way, i.e., 797102289 + 43599609 = 28233^2 + 6603^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (840701893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23352813 + ... + 23352848.

Almost surely, 2^840701898 is an apocalyptic number.

840701898 is an abundant number, since it is smaller than the sum of its proper divisors (980818920).

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

840701898 is a wasteful number, since it uses less digits than its factorization.

840701898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46705669 (or 46705666 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 840701898 is about 28994.8598548087. The cubic root of 840701898 is about 943.8015276575.

The spelling of 840701898 in words is "eight hundred forty million, seven hundred one thousand, eight hundred ninety-eight".