939389477 has 8 divisors (see below), whose sum is σ = 1025509464. Its totient is φ = 855249408.

The previous prime is 939389467. The next prime is 939389491. The reversal of 939389477 is 774983939.

It can be written as a sum of positive squares in 4 ways, for example, as 166048996 + 773340481 = 12886^2 + 27809^2 .

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

It is not a de Polignac number, because 939389477 - 2⁴ = 939389461 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 (939389467) 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, 493988 + ... + 495885.

It is an arithmetic number, because the mean of its divisors is an integer number (128188683).

Almost surely, 2^939389477 is an apocalyptic number.

It is an amenable number.

939389477 is a deficient number, since it is larger than the sum of its proper divisors (86119987).

939389477 is a wasteful number, since it uses less digits than its factorization.

939389477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989959.

The product of its digits is 10287648, while the sum is 59.

The square root of 939389477 is about 30649.4612840095. The cubic root of 939389477 is about 979.3739848237.

The spelling of 939389477 in words is "nine hundred thirty-nine million, three hundred eighty-nine thousand, four hundred seventy-seven".