291149029 has 2 divisors, whose sum is σ = 291149030. Its totient is φ = 291149028.

The previous prime is 291149017. The next prime is 291149051. The reversal of 291149029 is 920941192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286624900 + 4524129 = 16930^2 + 2127^2 .

It is a cyclic number.

It is not a de Polignac number, because 291149029 - 2²³ = 282760421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (291149059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145574514 + 145574515.

It is an arithmetic number, because the mean of its divisors is an integer number (145574515).

Almost surely, 2^291149029 is an apocalyptic number.

It is an amenable number.

291149029 is a deficient number, since it is larger than the sum of its proper divisors (1).

291149029 is an equidigital number, since it uses as much as digits as its factorization.

291149029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 291149029 is about 17063.0896674664. The cubic root of 291149029 is about 662.7836432995.

The spelling of 291149029 in words is "two hundred ninety-one million, one hundred forty-nine thousand, twenty-nine".