422978931943 has 4 divisors (see below), whose sum is σ = 424484195328. Its totient is φ = 421473668560.

The previous prime is 422978931899. The next prime is 422978931989. The reversal of 422978931943 is 349139879224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422978931943 - 2²⁹ = 422442061031 is a prime.

It is a super-2 number, since 2×422978931943² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422978931343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752631271 + ... + 752631832.

It is an arithmetic number, because the mean of its divisors is an integer number (106121048832).

Almost surely, 2^422978931943 is an apocalyptic number.

422978931943 is a deficient number, since it is larger than the sum of its proper divisors (1505263385).

422978931943 is a wasteful number, since it uses less digits than its factorization.

422978931943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505263384.

The product of its digits is 23514624, while the sum is 61.

The spelling of 422978931943 in words is "four hundred twenty-two billion, nine hundred seventy-eight million, nine hundred thirty-one thousand, nine hundred forty-three".