379931869 has 2 divisors, whose sum is σ = 379931870. Its totient is φ = 379931868.

The previous prime is 379931843. The next prime is 379931891. The reversal of 379931869 is 968139973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285103225 + 94828644 = 16885^2 + 9738^2 .

It is a cyclic number.

It is not a de Polignac number, because 379931869 - 2⁵ = 379931837 is a prime.

It is a super-2 number, since 2×379931869² = 288696450163666322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379931899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189965934 + 189965935.

It is an arithmetic number, because the mean of its divisors is an integer number (189965935).

Almost surely, 2^379931869 is an apocalyptic number.

It is an amenable number.

379931869 is a deficient number, since it is larger than the sum of its proper divisors (1).

379931869 is an equidigital number, since it uses as much as digits as its factorization.

379931869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 379931869 is about 19491.8410880040. The cubic root of 379931869 is about 724.2723537313.

The spelling of 379931869 in words is "three hundred seventy-nine million, nine hundred thirty-one thousand, eight hundred sixty-nine".