1939938477 has 8 divisors (see below), whose sum is σ = 2586849216. Its totient is φ = 1293160032.

The previous prime is 1939938449. The next prime is 1939938479. The reversal of 1939938477 is 7748399391.

It is a happy number.

1939938477 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1939938477 - 2²⁶ = 1872829613 is a prime.

It is a super-2 number, since 2×1939938477² = 7526722589090159058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1939938477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939938479) 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, 8673 + ... + 62889.

It is an arithmetic number, because the mean of its divisors is an integer number (323356152).

Almost surely, 2^1939938477 is an apocalyptic number.

It is an amenable number.

1939938477 is a deficient number, since it is larger than the sum of its proper divisors (646910739).

1939938477 is a wasteful number, since it uses less digits than its factorization.

1939938477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66147.

The product of its digits is 10287648, while the sum is 60.

The square root of 1939938477 is about 44044.7326816726. The cubic root of 1939938477 is about 1247.1805203022.

The spelling of 1939938477 in words is "one billion, nine hundred thirty-nine million, nine hundred thirty-eight thousand, four hundred seventy-seven".