424451693 has 2 divisors, whose sum is σ = 424451694. Its totient is φ = 424451692.

The previous prime is 424451647. The next prime is 424451701. The reversal of 424451693 is 396154424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269025604 + 155426089 = 16402^2 + 12467^2 .

It is a cyclic number.

It is not a de Polignac number, because 424451693 - 2¹⁰ = 424450669 is a prime.

It is a Chen prime.

It is equal to p_22568825 and since 424451693 and 22568825 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424451593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212225846 + 212225847.

It is an arithmetic number, because the mean of its divisors is an integer number (212225847).

Almost surely, 2^424451693 is an apocalyptic number.

It is an amenable number.

424451693 is a deficient number, since it is larger than the sum of its proper divisors (1).

424451693 is an equidigital number, since it uses as much as digits as its factorization.

424451693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 424451693 is about 20602.2254380443. The cubic root of 424451693 is about 751.5238310071.

The spelling of 424451693 in words is "four hundred twenty-four million, four hundred fifty-one thousand, six hundred ninety-three".