840601084 has 48 divisors (see below), whose sum is σ = 1562803200. Its totient is φ = 395049600.

The previous prime is 840601081. The next prime is 840601093. The reversal of 840601084 is 480106048.

It is a super-2 number, since 2×840601084² = 1413220364843950112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840601081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650479 + ... + 651769.

It is an arithmetic number, because the mean of its divisors is an integer number (32558400).

Almost surely, 2^840601084 is an apocalyptic number.

It is an amenable number.

840601084 is a deficient number, since it is larger than the sum of its proper divisors (722202116).

840601084 is a wasteful number, since it uses less digits than its factorization.

840601084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 840601084 is about 28993.1213221343. The cubic root of 840601084 is about 943.7638003683.

The spelling of 840601084 in words is "eight hundred forty million, six hundred one thousand, eighty-four".