1940447077 has 8 divisors (see below), whose sum is σ = 2040837120. Its totient is φ = 1842419280.

The previous prime is 1940447071. The next prime is 1940447081. The reversal of 1940447077 is 7707440491.

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

It is a de Polignac number, because none of the positive numbers 2^k-1940447077 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 (1940447071) 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 7 ways as a sum of consecutive naturals, for example, 588877 + ... + 592162.

It is an arithmetic number, because the mean of its divisors is an integer number (255104640).

Almost surely, 2^1940447077 is an apocalyptic number.

It is an amenable number.

1940447077 is a deficient number, since it is larger than the sum of its proper divisors (100390043).

1940447077 is a wasteful number, since it uses less digits than its factorization.

1940447077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181123.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 1940447077 is about 44050.5059789329. The cubic root of 1940447077 is about 1247.2895032407.

The spelling of 1940447077 in words is "one billion, nine hundred forty million, four hundred forty-seven thousand, seventy-seven".