3990553897 has 8 divisors (see below), whose sum is σ = 4454572320. Its totient is φ = 3543408960.

The previous prime is 3990553883. The next prime is 3990553901. The reversal of 3990553897 is 7983550993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3990553897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3990553877) 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, 4217872 + ... + 4218817.

It is an arithmetic number, because the mean of its divisors is an integer number (556821540).

Almost surely, 2^3990553897 is an apocalyptic number.

It is an amenable number.

3990553897 is a deficient number, since it is larger than the sum of its proper divisors (464018423).

3990553897 is a wasteful number, since it uses less digits than its factorization.

3990553897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8436743.

The product of its (nonzero) digits is 9185400, while the sum is 58.

The square root of 3990553897 is about 63170.8310614955. The cubic root of 3990553897 is about 1586.1505042308.

The spelling of 3990553897 in words is "three billion, nine hundred ninety million, five hundred fifty-three thousand, eight hundred ninety-seven".