1438421079 has 16 divisors (see below), whose sum is σ = 1966219904. Its totient is φ = 934869600.

The previous prime is 1438421077. The next prime is 1438421099. The reversal of 1438421079 is 9701248341.

It is not a de Polignac number, because 1438421079 - 2¹ = 1438421077 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 (1438421077) 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, 59484 + ... + 80094.

It is an arithmetic number, because the mean of its divisors is an integer number (122888744).

Almost surely, 2^1438421079 is an apocalyptic number.

1438421079 is a deficient number, since it is larger than the sum of its proper divisors (527798825).

1438421079 is a wasteful number, since it uses less digits than its factorization.

1438421079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21198.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1438421079 is about 37926.5221052498. The cubic root of 1438421079 is about 1128.8303555091.

The spelling of 1438421079 in words is "one billion, four hundred thirty-eight million, four hundred twenty-one thousand, seventy-nine".