1390026277639 has 4 divisors (see below), whose sum is σ = 1390030139920. Its totient is φ = 1390022415360.

The previous prime is 1390026277597. The next prime is 1390026277643. The reversal of 1390026277639 is 9367726200931.

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

It is a cyclic number.

It is not a de Polignac number, because 1390026277639 - 2⁹ = 1390026277127 is a prime.

It is a super-2 number, since 2×1390026277639² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1390026277639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390026277669) 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, 1328634 + ... + 2131975.

It is an arithmetic number, because the mean of its divisors is an integer number (347507534980).

Almost surely, 2^{1390026277639} is an apocalyptic number.

1390026277639 is a deficient number, since it is larger than the sum of its proper divisors (3862281).

1390026277639 is an equidigital number, since it uses as much as digits as its factorization.

1390026277639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862280.

The product of its (nonzero) digits is 5143824, while the sum is 55.

The spelling of 1390026277639 in words is "one trillion, three hundred ninety billion, twenty-six million, two hundred seventy-seven thousand, six hundred thirty-nine".