1438572879 has 28 divisors (see below), whose sum is σ = 2189139096. Its totient is φ = 944702352.

The previous prime is 1438572847. The next prime is 1438572901. The reversal of 1438572879 is 9782758341.

It is a happy number.

It is not a de Polignac number, because 1438572879 - 2⁵ = 1438572847 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438572379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 34117 + ... + 63569.

Almost surely, 2^1438572879 is an apocalyptic number.

1438572879 is a deficient number, since it is larger than the sum of its proper divisors (750566217).

1438572879 is an frugal number, since it uses more digits than its factorization.

1438572879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29538 (or 29523 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 1438572879 is about 37928.5232905264. The cubic root of 1438572879 is about 1128.8700634970.

The spelling of 1438572879 in words is "one billion, four hundred thirty-eight million, five hundred seventy-two thousand, eight hundred seventy-nine".