8434401923 has 4 divisors (see below), whose sum is σ = 8461349208. Its totient is φ = 8407454640.

The previous prime is 8434401919. The next prime is 8434402003. The reversal of 8434401923 is 3291044348.

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 8434401923 - 2² = 8434401919 is a prime.

It is a super-2 number, since 2×8434401923² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8434401523) 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, 13473173 + ... + 13473798.

It is an arithmetic number, because the mean of its divisors is an integer number (2115337302).

Almost surely, 2^8434401923 is an apocalyptic number.

8434401923 is a deficient number, since it is larger than the sum of its proper divisors (26947285).

8434401923 is a wasteful number, since it uses less digits than its factorization.

8434401923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26947284.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 8434401923 is about 91839.0000108886. Note that the first 4 decimals coincide. The cubic root of 8434401923 is about 2035.5640123200.

The spelling of 8434401923 in words is "eight billion, four hundred thirty-four million, four hundred one thousand, nine hundred twenty-three".