1440938077 has 8 divisors (see below), whose sum is σ = 1456608096. Its totient is φ = 1425309072.

The previous prime is 1440938069. The next prime is 1440938089. The reversal of 1440938077 is 7708390441.

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

It is a cyclic number.

It is not a de Polignac number, because 1440938077 - 2³ = 1440938069 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 (1440638077) 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, 63223 + ... + 82939.

It is an arithmetic number, because the mean of its divisors is an integer number (182076012).

Almost surely, 2^1440938077 is an apocalyptic number.

It is an amenable number.

1440938077 is a deficient number, since it is larger than the sum of its proper divisors (15670019).

1440938077 is a wasteful number, since it uses less digits than its factorization.

1440938077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20507.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1440938077 is about 37959.6901594310. The cubic root of 1440938077 is about 1129.4883937223.

The spelling of 1440938077 in words is "one billion, four hundred forty million, nine hundred thirty-eight thousand, seventy-seven".