264429881 has 2 divisors, whose sum is σ = 264429882. Its totient is φ = 264429880.

The previous prime is 264429793. The next prime is 264429923. The reversal of 264429881 is 188924462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245862400 + 18567481 = 15680^2 + 4309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264429881 is a prime.

It is a super-2 number, since 2×264429881² = 139846323931348322, 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 (264429181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132214940 + 132214941.

It is an arithmetic number, because the mean of its divisors is an integer number (132214941).

Almost surely, 2^264429881 is an apocalyptic number.

It is an amenable number.

264429881 is a deficient number, since it is larger than the sum of its proper divisors (1).

264429881 is an equidigital number, since it uses as much as digits as its factorization.

264429881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 44.

The square root of 264429881 is about 16261.3001017754. The cubic root of 264429881 is about 641.8548736573.

The spelling of 264429881 in words is "two hundred sixty-four million, four hundred twenty-nine thousand, eight hundred eighty-one".