424033691 has 2 divisors, whose sum is σ = 424033692. Its totient is φ = 424033690.

The previous prime is 424033663. The next prime is 424033693. The reversal of 424033691 is 196330424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 424033691 - 2¹⁰ = 424032667 is a prime.

It is a super-2 number, since 2×424033691² = 359609142206166962, which contains 22 as substring.

Together with 424033693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424033693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212016845 + 212016846.

It is an arithmetic number, because the mean of its divisors is an integer number (212016846).

Almost surely, 2^424033691 is an apocalyptic number.

424033691 is a deficient number, since it is larger than the sum of its proper divisors (1).

424033691 is an equidigital number, since it uses as much as digits as its factorization.

424033691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 424033691 is about 20592.0783555230. The cubic root of 424033691 is about 751.2770485913.

The spelling of 424033691 in words is "four hundred twenty-four million, thirty-three thousand, six hundred ninety-one".