405552089 has 2 divisors, whose sum is σ = 405552090. Its totient is φ = 405552088.

The previous prime is 405552073. The next prime is 405552127. The reversal of 405552089 is 980255504.

It is an a-pointer prime, because the next prime (405552127) can be obtained adding 405552089 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234334864 + 171217225 = 15308^2 + 13085^2 .

It is a cyclic number.

It is not a de Polignac number, because 405552089 - 2⁴ = 405552073 is a prime.

It is not a weakly prime, because it can be changed into another prime (405552029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202776044 + 202776045.

It is an arithmetic number, because the mean of its divisors is an integer number (202776045).

Almost surely, 2^405552089 is an apocalyptic number.

It is an amenable number.

405552089 is a deficient number, since it is larger than the sum of its proper divisors (1).

405552089 is an equidigital number, since it uses as much as digits as its factorization.

405552089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 405552089 is about 20138.3238875533. The cubic root of 405552089 is about 740.1996594194.

The spelling of 405552089 in words is "four hundred five million, five hundred fifty-two thousand, eighty-nine".