420417969 has 16 divisors (see below), whose sum is σ = 567993600. Its totient is φ = 276582656.

The previous prime is 420417967. The next prime is 420417971. The reversal of 420417969 is 969714024.

It is an interprime number because it is at equal distance from previous prime (420417967) and next prime (420417971).

It is a cyclic number.

It is not a de Polignac number, because 420417969 - 2¹ = 420417967 is a prime.

It is a super-2 number, since 2×420417969² = 353502537316169922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 420417969.

It is not an unprimeable number, because it can be changed into a prime (420417967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78427 + ... + 83615.

It is an arithmetic number, because the mean of its divisors is an integer number (35499600).

Almost surely, 2^420417969 is an apocalyptic number.

It is an amenable number.

420417969 is a deficient number, since it is larger than the sum of its proper divisors (147575631).

420417969 is a wasteful number, since it uses less digits than its factorization.

420417969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 420417969 is about 20504.0963955986. The cubic root of 420417969 is about 749.1355783052.

The spelling of 420417969 in words is "four hundred twenty million, four hundred seventeen thousand, nine hundred sixty-nine".