1382391929 has 2 divisors, whose sum is σ = 1382391930. Its totient is φ = 1382391928.

The previous prime is 1382391919. The next prime is 1382391937. The reversal of 1382391929 is 9291932831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1379973904 + 2418025 = 37148^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1382391929 - 2²⁴ = 1365614713 is a prime.

It is a super-2 number, since 2×1382391929² = 3822014890728682082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1382391919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691195964 + 691195965.

It is an arithmetic number, because the mean of its divisors is an integer number (691195965).

Almost surely, 2^1382391929 is an apocalyptic number.

It is an amenable number.

1382391929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1382391929 is an equidigital number, since it uses as much as digits as its factorization.

1382391929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 1382391929 is about 37180.5315857641. The cubic root of 1382391929 is about 1113.9791521078.

The spelling of 1382391929 in words is "one billion, three hundred eighty-two million, three hundred ninety-one thousand, nine hundred twenty-nine".