6429723970 has 8 divisors (see below), whose sum is σ = 11573503164. Its totient is φ = 2571889584.

The previous prime is 6429723967. The next prime is 6429724151. The reversal of 6429723970 is 793279246.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6273748849 + 155975121 = 79207^2 + 12489^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321486189 + ... + 321486208.

Almost surely, 2^6429723970 is an apocalyptic number.

6429723970 is a deficient number, since it is larger than the sum of its proper divisors (5143779194).

6429723970 is a wasteful number, since it uses less digits than its factorization.

6429723970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642972404.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 6429723970 is about 80185.5596101942. The cubic root of 6429723970 is about 1859.5053961025.

The spelling of 6429723970 in words is "six billion, four hundred twenty-nine million, seven hundred twenty-three thousand, nine hundred seventy".