1439950901 has 4 divisors (see below), whose sum is σ = 1450310400. Its totient is φ = 1429591404.

The previous prime is 1439950877. The next prime is 1439950913. The reversal of 1439950901 is 1090599341.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1439950901 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 (1439950921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5179541 + ... + 5179818.

It is an arithmetic number, because the mean of its divisors is an integer number (362577600).

Almost surely, 2^1439950901 is an apocalyptic number.

It is an amenable number.

1439950901 is a deficient number, since it is larger than the sum of its proper divisors (10359499).

1439950901 is a wasteful number, since it uses less digits than its factorization.

1439950901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10359498.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 1439950901 is about 37946.6849803774. The cubic root of 1439950901 is about 1129.2304000869.

The spelling of 1439950901 in words is "one billion, four hundred thirty-nine million, nine hundred fifty thousand, nine hundred one".