1439672429 has 4 divisors (see below), whose sum is σ = 1550416476. Its totient is φ = 1328928384.

The previous prime is 1439672413. The next prime is 1439672449. The reversal of 1439672429 is 9242769341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85285225 + 1354387204 = 9235^2 + 36802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1439672429 - 2⁴ = 1439672413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439672449) 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, 55372004 + ... + 55372029.

It is an arithmetic number, because the mean of its divisors is an integer number (387604119).

Almost surely, 2^1439672429 is an apocalyptic number.

It is an amenable number.

1439672429 is a deficient number, since it is larger than the sum of its proper divisors (110744047).

1439672429 is a wasteful number, since it uses less digits than its factorization.

1439672429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110744046.

The product of its digits is 653184, while the sum is 47.

The square root of 1439672429 is about 37943.0155496371. The cubic root of 1439672429 is about 1129.1576014656.

The spelling of 1439672429 in words is "one billion, four hundred thirty-nine million, six hundred seventy-two thousand, four hundred twenty-nine".