3988172953 has 4 divisors (see below), whose sum is σ = 4222771380. Its totient is φ = 3753574528.

The previous prime is 3988172939. The next prime is 3988172957. The reversal of 3988172953 is 3592718893.

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 2378317824 + 1609855129 = 48768^2 + 40123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3988172953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3988172894 and 3988172903.

It is not an unprimeable number, because it can be changed into a prime (3988172957) 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, 117299188 + ... + 117299221.

It is an arithmetic number, because the mean of its divisors is an integer number (1055692845).

Almost surely, 2^3988172953 is an apocalyptic number.

It is an amenable number.

3988172953 is a deficient number, since it is larger than the sum of its proper divisors (234598427).

3988172953 is a wasteful number, since it uses less digits than its factorization.

3988172953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234598426.

The product of its digits is 3265920, while the sum is 55.

The square root of 3988172953 is about 63151.9829696582. The cubic root of 3988172953 is about 1585.8349852197.

The spelling of 3988172953 in words is "three billion, nine hundred eighty-eight million, one hundred seventy-two thousand, nine hundred fifty-three".