3898310993 has 4 divisors (see below), whose sum is σ = 4032735540. Its totient is φ = 3763886448.

The previous prime is 3898310947. The next prime is 3898311029. The reversal of 3898310993 is 3990138983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3008303104 + 890007889 = 54848^2 + 29833^2 .

It is a cyclic number.

It is not a de Polignac number, because 3898310993 - 2⁶ = 3898310929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3898310903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67212230 + ... + 67212287.

It is an arithmetic number, because the mean of its divisors is an integer number (1008183885).

Almost surely, 2^3898310993 is an apocalyptic number.

It is an amenable number.

3898310993 is a deficient number, since it is larger than the sum of its proper divisors (134424547).

3898310993 is a wasteful number, since it uses less digits than its factorization.

3898310993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134424546.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 3898310993 is about 62436.4556409154. The cubic root of 3898310993 is about 1573.8336530594.

The spelling of 3898310993 in words is "three billion, eight hundred ninety-eight million, three hundred ten thousand, nine hundred ninety-three".