8490697388 has 24 divisors (see below), whose sum is σ = 15512888832. Its totient is φ = 4058637264.

The previous prime is 8490697387. The next prime is 8490697393. The reversal of 8490697388 is 8837960948.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8490697388.

It is not an unprimeable number, because it can be changed into a prime (8490697387) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 159581 + ... + 206027.

It is an arithmetic number, because the mean of its divisors is an integer number (646370368).

Almost surely, 2^8490697388 is an apocalyptic number.

It is an amenable number.

8490697388 is a deficient number, since it is larger than the sum of its proper divisors (7022191444).

8490697388 is a wasteful number, since it uses less digits than its factorization.

8490697388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48461 (or 48459 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 62.

The square root of 8490697388 is about 92144.9802647979. The cubic root of 8490697388 is about 2040.0827683322.

The spelling of 8490697388 in words is "eight billion, four hundred ninety million, six hundred ninety-seven thousand, three hundred eighty-eight".