409253623 has 2 divisors, whose sum is σ = 409253624. Its totient is φ = 409253622.

The previous prime is 409253617. The next prime is 409253629. The reversal of 409253623 is 326352904.

It is a balanced prime because it is at equal distance from previous prime (409253617) and next prime (409253629).

It is a cyclic number.

It is not a de Polignac number, because 409253623 - 2⁵ = 409253591 is a prime.

It is a super-2 number, since 2×409253623² = 334977055877252258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409253629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204626811 + 204626812.

It is an arithmetic number, because the mean of its divisors is an integer number (204626812).

Almost surely, 2^409253623 is an apocalyptic number.

409253623 is a deficient number, since it is larger than the sum of its proper divisors (1).

409253623 is an equidigital number, since it uses as much as digits as its factorization.

409253623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 409253623 is about 20230.0178694928. The cubic root of 409253623 is about 742.4448132450. Note that the first 3 decimals are identical.

The spelling of 409253623 in words is "four hundred nine million, two hundred fifty-three thousand, six hundred twenty-three".