1623229 has 2 divisors, whose sum is σ = 1623230. Its totient is φ = 1623228.

The previous prime is 1623203. The next prime is 1623233. The reversal of 1623229 is 9223261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 357604 = 1125^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623229 - 2⁵ = 1623197 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811614 + 811615.

It is an arithmetic number, because the mean of its divisors is an integer number (811615).

2^1623229 is an apocalyptic number.

It is an amenable number.

1623229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623229 is an equidigital number, since it uses as much as digits as its factorization.

1623229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 1623229 is about 1274.0600456807. The cubic root of 1623229 is about 117.5240089765.

It can be divided in two parts, 16232 and 29, that added together give a palindrome (16261).

The spelling of 1623229 in words is "one million, six hundred twenty-three thousand, two hundred twenty-nine".