424039997 has 2 divisors, whose sum is σ = 424039998. Its totient is φ = 424039996.

The previous prime is 424039951. The next prime is 424040009. The reversal of 424039997 is 799930424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416608921 + 7431076 = 20411^2 + 2726^2 .

It is a cyclic number.

It is not a de Polignac number, because 424039997 - 2²² = 419845693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424039907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212019998 + 212019999.

It is an arithmetic number, because the mean of its divisors is an integer number (212019999).

Almost surely, 2^424039997 is an apocalyptic number.

It is an amenable number.

424039997 is a deficient number, since it is larger than the sum of its proper divisors (1).

424039997 is an equidigital number, since it uses as much as digits as its factorization.

424039997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 424039997 is about 20592.2314720867. The cubic root of 424039997 is about 751.2807727683.

The spelling of 424039997 in words is "four hundred twenty-four million, thirty-nine thousand, nine hundred ninety-seven".