3998888953 has 2 divisors, whose sum is σ = 3998888954. Its totient is φ = 3998888952.

The previous prime is 3998888947. The next prime is 3998888983. The reversal of 3998888953 is 3598888993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3232263609 + 766625344 = 56853^2 + 27688^2 .

It is a cyclic number.

It is not a de Polignac number, because 3998888953 - 2¹⁷ = 3998757881 is a prime.

It is a super-2 number, since 2×3998888953² = 31982225716850872418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3998888983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999444476 + 1999444477.

It is an arithmetic number, because the mean of its divisors is an integer number (1999444477).

Almost surely, 2^3998888953 is an apocalyptic number.

It is an amenable number.

3998888953 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998888953 is an equidigital number, since it uses as much as digits as its factorization.

3998888953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134369280, while the sum is 70.

The square root of 3998888953 is about 63236.7689955772. The cubic root of 3998888953 is about 1587.2540652602.

The spelling of 3998888953 in words is "three billion, nine hundred ninety-eight million, eight hundred eighty-eight thousand, nine hundred fifty-three".