1040809229 has 2 divisors, whose sum is σ = 1040809230. Its totient is φ = 1040809228.

The previous prime is 1040809201. The next prime is 1040809249. The reversal of 1040809229 is 9229080401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038772900 + 2036329 = 32230^2 + 1427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040809229 - 2²⁰ = 1039760653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040809249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520404614 + 520404615.

It is an arithmetic number, because the mean of its divisors is an integer number (520404615).

Almost surely, 2^1040809229 is an apocalyptic number.

It is an amenable number.

1040809229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040809229 is an equidigital number, since it uses as much as digits as its factorization.

1040809229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1040809229 is about 32261.5751165376. The cubic root of 1040809229 is about 1013.4221170935.

The spelling of 1040809229 in words is "one billion, forty million, eight hundred nine thousand, two hundred twenty-nine".