3913238869 has 2 divisors, whose sum is σ = 3913238870. Its totient is φ = 3913238868.

The previous prime is 3913238827. The next prime is 3913238899. The reversal of 3913238869 is 9688323193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2526570225 + 1386668644 = 50265^2 + 37238^2 .

It is a cyclic number.

It is not a de Polignac number, because 3913238869 - 2⁷ = 3913238741 is a prime.

It is a super-2 number, since 2×3913238869² = 30626876891704798322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3913238899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1956619434 + 1956619435.

It is an arithmetic number, because the mean of its divisors is an integer number (1956619435).

Almost surely, 2^3913238869 is an apocalyptic number.

It is an amenable number.

3913238869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3913238869 is an equidigital number, since it uses as much as digits as its factorization.

3913238869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 52.

The square root of 3913238869 is about 62555.8859660704. The cubic root of 3913238869 is about 1575.8399979123.

The spelling of 3913238869 in words is "three billion, nine hundred thirteen million, two hundred thirty-eight thousand, eight hundred sixty-nine".