84477390 has 64 divisors (see below), whose sum is σ = 213000192. Its totient is φ = 21401600.

The previous prime is 84477373. The next prime is 84477391. The reversal of 84477390 is 9377448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84477391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131470 + ... + 132110.

It is an arithmetic number, because the mean of its divisors is an integer number (3328128).

Almost surely, 2^84477390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84477390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106500096).

84477390 is an abundant number, since it is smaller than the sum of its proper divisors (128522802).

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

84477390 is a wasteful number, since it uses less digits than its factorization.

84477390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 84477390 is about 9191.1582512761. The cubic root of 84477390 is about 438.7800054154.

The spelling of 84477390 in words is "eighty-four million, four hundred seventy-seven thousand, three hundred ninety".