3938374969 has 4 divisors (see below), whose sum is σ = 3938537844. Its totient is φ = 3938212096.

The previous prime is 3938374927. The next prime is 3938375009. The reversal of 3938374969 is 9694738393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9694738393 = 17 ⋅570278729.

It can be written as a sum of positive squares in 2 ways, for example, as 1737639225 + 2200735744 = 41685^2 + 46912^2 .

It is a cyclic number.

It is not a de Polignac number, because 3938374969 - 2⁹ = 3938374457 is a prime.

It is a super-2 number, since 2×3938374969² = 31021594792891501922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3938374469) 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, 37132 + ... + 96205.

It is an arithmetic number, because the mean of its divisors is an integer number (984634461).

Almost surely, 2^3938374969 is an apocalyptic number.

It is an amenable number.

3938374969 is a deficient number, since it is larger than the sum of its proper divisors (162875).

3938374969 is a wasteful number, since it uses less digits than its factorization.

3938374969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162874.

The product of its digits is 26453952, while the sum is 61.

The square root of 3938374969 is about 62756.4735226574. The cubic root of 3938374969 is about 1579.2068562295.

The spelling of 3938374969 in words is "three billion, nine hundred thirty-eight million, three hundred seventy-four thousand, nine hundred sixty-nine".