86974390 has 32 divisors (see below), whose sum is σ = 159637536. Its totient is φ = 34110720.

The previous prime is 86974387. The next prime is 86974403. The reversal of 86974390 is 9347968.

It is a self number, because there is not a number n which added to its sum of digits gives 86974390.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206380 + ... + 206800.

It is an arithmetic number, because the mean of its divisors is an integer number (4988673).

Almost surely, 2^86974390 is an apocalyptic number.

86974390 is a deficient number, since it is larger than the sum of its proper divisors (72663146).

86974390 is a wasteful number, since it uses less digits than its factorization.

86974390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 86974390 is about 9326.0061119431. The cubic root of 86974390 is about 443.0612793087.

The spelling of 86974390 in words is "eighty-six million, nine hundred seventy-four thousand, three hundred ninety".