420969391407 has 16 divisors (see below), whose sum is σ = 623683243360. Its totient is φ = 280635062400.

The previous prime is 420969391393. The next prime is 420969391441. The reversal of 420969391407 is 704193969024.

420969391407 is a `hidden beast` number, since 4 + 209 + 6 + 9 + 391 + 40 + 7 = 666.

It is not a de Polignac number, because 420969391407 - 2²⁷ = 420835173679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420969391907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408357 + ... + 1004337.

It is an arithmetic number, because the mean of its divisors is an integer number (38980202710).

Almost surely, 2^420969391407 is an apocalyptic number.

420969391407 is a deficient number, since it is larger than the sum of its proper divisors (202713851953).

420969391407 is a wasteful number, since it uses less digits than its factorization.

420969391407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622151 (or 622145 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 420969391407 in words is "four hundred twenty billion, nine hundred sixty-nine million, three hundred ninety-one thousand, four hundred seven".