420044749 has 2 divisors, whose sum is σ = 420044750. Its totient is φ = 420044748.

The previous prime is 420044743. The next prime is 420044767. The reversal of 420044749 is 947440024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274962724 + 145082025 = 16582^2 + 12045^2 .

It is a cyclic number.

It is not a de Polignac number, because 420044749 - 2³ = 420044741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420044741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210022374 + 210022375.

It is an arithmetic number, because the mean of its divisors is an integer number (210022375).

Almost surely, 2^420044749 is an apocalyptic number.

It is an amenable number.

420044749 is a deficient number, since it is larger than the sum of its proper divisors (1).

420044749 is an equidigital number, since it uses as much as digits as its factorization.

420044749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 420044749 is about 20494.9932666493. The cubic root of 420044749 is about 748.9138345670.

The spelling of 420044749 in words is "four hundred twenty million, forty-four thousand, seven hundred forty-nine".