84100388 has 6 divisors (see below), whose sum is σ = 147175686. Its totient is φ = 42050192.

The previous prime is 84100349. The next prime is 84100391. The reversal of 84100388 is 88300148.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 29073664 = 7418^2 + 5392^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10512545 + ... + 10512552.

It is an arithmetic number, because the mean of its divisors is an integer number (24529281).

Almost surely, 2^84100388 is an apocalyptic number.

It is an amenable number.

84100388 is a deficient number, since it is larger than the sum of its proper divisors (63075298).

84100388 is a wasteful number, since it uses less digits than its factorization.

84100388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21025101 (or 21025099 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 84100388 is about 9170.6263690110. The cubic root of 84100388 is about 438.1263092832.

The spelling of 84100388 in words is "eighty-four million, one hundred thousand, three hundred eighty-eight".