1429988993 has 4 divisors (see below), whose sum is σ = 1430076228. Its totient is φ = 1429901760.

The previous prime is 1429988969. The next prime is 1429988999. The reversal of 1429988993 is 3998899241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 536756224 + 893232769 = 23168^2 + 29887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1429988993 - 2⁸ = 1429988737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1429988999) 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, 10796 + ... + 54557.

It is an arithmetic number, because the mean of its divisors is an integer number (357519057).

Almost surely, 2^1429988993 is an apocalyptic number.

It is an amenable number.

1429988993 is a deficient number, since it is larger than the sum of its proper divisors (87235).

1429988993 is an equidigital number, since it uses as much as digits as its factorization.

1429988993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87234.

The product of its digits is 10077696, while the sum is 62.

The square root of 1429988993 is about 37815.1952659245. The cubic root of 1429988993 is about 1126.6202807115.

The spelling of 1429988993 in words is "one billion, four hundred twenty-nine million, nine hundred eighty-eight thousand, nine hundred ninety-three".