1429172873 has 4 divisors (see below), whose sum is σ = 1491310848. Its totient is φ = 1367034900.

The previous prime is 1429172869. The next prime is 1429172879. The reversal of 1429172873 is 3782719241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1429172873 - 2² = 1429172869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1429172879) 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, 31068953 + ... + 31068998.

It is an arithmetic number, because the mean of its divisors is an integer number (372827712).

Almost surely, 2^1429172873 is an apocalyptic number.

It is an amenable number.

1429172873 is a deficient number, since it is larger than the sum of its proper divisors (62137975).

1429172873 is an equidigital number, since it uses as much as digits as its factorization.

1429172873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62137974.

The product of its digits is 169344, while the sum is 44.

The square root of 1429172873 is about 37804.4028255969. The cubic root of 1429172873 is about 1126.4059125543.

The spelling of 1429172873 in words is "one billion, four hundred twenty-nine million, one hundred seventy-two thousand, eight hundred seventy-three".