1439699961 has 16 divisors (see below), whose sum is σ = 2322877824. Its totient is φ = 774292224.

The previous prime is 1439699917. The next prime is 1439699969. The reversal of 1439699961 is 1699969341.

It is not a de Polignac number, because 1439699961 - 2¹⁰ = 1439698937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1439699969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2016030 + ... + 2016743.

It is an arithmetic number, because the mean of its divisors is an integer number (145179864).

Almost surely, 2^1439699961 is an apocalyptic number.

It is an amenable number.

1439699961 is a deficient number, since it is larger than the sum of its proper divisors (883177863).

1439699961 is a wasteful number, since it uses less digits than its factorization.

1439699961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032800.

The product of its digits is 2834352, while the sum is 57.

The square root of 1439699961 is about 37943.3783551228. The cubic root of 1439699961 is about 1129.1647993457.

The spelling of 1439699961 in words is "one billion, four hundred thirty-nine million, six hundred ninety-nine thousand, nine hundred sixty-one".