1376923989 has 8 divisors (see below), whose sum is σ = 2098169920. Its totient is φ = 786813696.

The previous prime is 1376923987. The next prime is 1376923997. The reversal of 1376923989 is 9893296731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1376923989 - 2¹ = 1376923987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376923987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32783884 + ... + 32783925.

It is an arithmetic number, because the mean of its divisors is an integer number (262271240).

Almost surely, 2^1376923989 is an apocalyptic number.

It is an amenable number.

1376923989 is a deficient number, since it is larger than the sum of its proper divisors (721245931).

1376923989 is an equidigital number, since it uses as much as digits as its factorization.

1376923989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65567819.

The product of its digits is 4408992, while the sum is 57.

The square root of 1376923989 is about 37106.9264289027. The cubic root of 1376923989 is about 1112.5084597093.

The spelling of 1376923989 in words is "one billion, three hundred seventy-six million, nine hundred twenty-three thousand, nine hundred eighty-nine".