423632749 has 2 divisors, whose sum is σ = 423632750. Its totient is φ = 423632748.

The previous prime is 423632743. The next prime is 423632753. The reversal of 423632749 is 947236324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316199524 + 107433225 = 17782^2 + 10365^2 .

It is a cyclic number.

It is not a de Polignac number, because 423632749 - 2¹⁷ = 423501677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423632743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211816374 + 211816375.

It is an arithmetic number, because the mean of its divisors is an integer number (211816375).

Almost surely, 2^423632749 is an apocalyptic number.

It is an amenable number.

423632749 is a deficient number, since it is larger than the sum of its proper divisors (1).

423632749 is an equidigital number, since it uses as much as digits as its factorization.

423632749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 40.

The square root of 423632749 is about 20582.3407075094. The cubic root of 423632749 is about 751.0401857216.

The spelling of 423632749 in words is "four hundred twenty-three million, six hundred thirty-two thousand, seven hundred forty-nine".