130440769 has 2 divisors, whose sum is σ = 130440770. Its totient is φ = 130440768.

The previous prime is 130440767. The next prime is 130440911. The reversal of 130440769 is 967044031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130233744 + 207025 = 11412^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 130440769 - 2¹ = 130440767 is a prime.

It is a super-2 number, since 2×130440769² = 34029588434622722, which contains 22 as substring.

Together with 130440767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (130440763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65220384 + 65220385.

It is an arithmetic number, because the mean of its divisors is an integer number (65220385).

Almost surely, 2^130440769 is an apocalyptic number.

It is an amenable number.

130440769 is a deficient number, since it is larger than the sum of its proper divisors (1).

130440769 is an equidigital number, since it uses as much as digits as its factorization.

130440769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 130440769 is about 11421.0668941216. The cubic root of 130440769 is about 507.1515807608.

The spelling of 130440769 in words is "one hundred thirty million, four hundred forty thousand, seven hundred sixty-nine".