84140826390 has 24 divisors (see below), whose sum is σ = 218766148848. Its totient is φ = 22437553680.

The previous prime is 84140826353. The next prime is 84140826397. The reversal of 84140826390 is 9362804148.

It is a happy number.

84140826390 is a `hidden beast` number, since 8 + 4 + 1 + 4 + 0 + 8 + 2 + 639 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84140826397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467448946 + ... + 467449125.

It is an arithmetic number, because the mean of its divisors is an integer number (9115256202).

Almost surely, 2^84140826390 is an apocalyptic number.

84140826390 is an abundant number, since it is smaller than the sum of its proper divisors (134625322458).

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

84140826390 is a wasteful number, since it uses less digits than its factorization.

84140826390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934898084 (or 934898081 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 84140826390 in words is "eighty-four billion, one hundred forty million, eight hundred twenty-six thousand, three hundred ninety".