420899579787 has 8 divisors (see below), whose sum is σ = 594211171536. Its totient is φ = 264093853952.

The previous prime is 420899579663. The next prime is 420899579791. The reversal of 420899579787 is 787975998024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420899579787 - 2³⁵ = 386539841419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420899579587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4126466418 + ... + 4126466519.

It is an arithmetic number, because the mean of its divisors is an integer number (74276396442).

Almost surely, 2^420899579787 is an apocalyptic number.

420899579787 is a deficient number, since it is larger than the sum of its proper divisors (173311591749).

420899579787 is a wasteful number, since it uses less digits than its factorization.

420899579787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252932957.

The product of its (nonzero) digits is 640120320, while the sum is 75.

The spelling of 420899579787 in words is "four hundred twenty billion, eight hundred ninety-nine million, five hundred seventy-nine thousand, seven hundred eighty-seven".