4398623 has 2 divisors, whose sum is σ = 4398624. Its totient is φ = 4398622.

The previous prime is 4398577. The next prime is 4398637. The reversal of 4398623 is 3268934.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4398623 - 2¹⁰ = 4397599 is a prime.

It is a super-2 number, since 2×4398623² = 38695768592258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4395623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199311 + 2199312.

It is an arithmetic number, because the mean of its divisors is an integer number (2199312).

Almost surely, 2^4398623 is an apocalyptic number.

4398623 is a deficient number, since it is larger than the sum of its proper divisors (1).

4398623 is an equidigital number, since it uses as much as digits as its factorization.

4398623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 4398623 is about 2097.2894411597. The cubic root of 4398623 is about 163.8471583155.

The spelling of 4398623 in words is "four million, three hundred ninety-eight thousand, six hundred twenty-three".