84386390 has 32 divisors (see below), whose sum is σ = 166219776. Its totient is φ = 30590560.

The previous prime is 84386347. The next prime is 84386431. The reversal of 84386390 is 9368348.

It is a super-3 number, since 3×84386390³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41129 + ... + 43131.

It is an arithmetic number, because the mean of its divisors is an integer number (5194368).

Almost surely, 2^84386390 is an apocalyptic number.

84386390 is a deficient number, since it is larger than the sum of its proper divisors (81833386).

84386390 is a wasteful number, since it uses less digits than its factorization.

84386390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 84386390 is about 9186.2065075852. The cubic root of 84386390 is about 438.6223958807.

The spelling of 84386390 in words is "eighty-four million, three hundred eighty-six thousand, three hundred ninety".