1434398789 has 4 divisors (see below), whose sum is σ = 1434501024. Its totient is φ = 1434296556.

The previous prime is 1434398759. The next prime is 1434398803. The reversal of 1434398789 is 9878934341.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9878934341 = 60617 ⋅162973.

It is a cyclic number.

It is not a de Polignac number, because 1434398789 - 2¹² = 1434394693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1434398759) 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, 25937 + ... + 59510.

It is an arithmetic number, because the mean of its divisors is an integer number (358625256).

Almost surely, 2^1434398789 is an apocalyptic number.

It is an amenable number.

1434398789 is a deficient number, since it is larger than the sum of its proper divisors (102235).

1434398789 is an equidigital number, since it uses as much as digits as its factorization.

1434398789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102234.

The product of its digits is 5225472, while the sum is 56.

The square root of 1434398789 is about 37873.4575791543. The cubic root of 1434398789 is about 1127.7771817843. Note that the first 3 decimals are identical.

The spelling of 1434398789 in words is "one billion, four hundred thirty-four million, three hundred ninety-eight thousand, seven hundred eighty-nine".