421948389867 has 8 divisors (see below), whose sum is σ = 592208266560. Its totient is φ = 266493719880.

The previous prime is 421948389851. The next prime is 421948389871. The reversal of 421948389867 is 768983849124.

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

It is not a de Polignac number, because 421948389867 - 2⁴ = 421948389851 is a prime.

It is a super-2 number, since 2×421948389867² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421948387867) 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, 3701301609 + ... + 3701301722.

It is an arithmetic number, because the mean of its divisors is an integer number (74026033320).

Almost surely, 2^421948389867 is an apocalyptic number.

421948389867 is a deficient number, since it is larger than the sum of its proper divisors (170259876693).

421948389867 is a wasteful number, since it uses less digits than its factorization.

421948389867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7402603353.

The product of its digits is 167215104, while the sum is 69.

The spelling of 421948389867 in words is "four hundred twenty-one billion, nine hundred forty-eight million, three hundred eighty-nine thousand, eight hundred sixty-seven".