6390477 has 6 divisors (see below), whose sum is σ = 9230702. Its totient is φ = 4260312.

The previous prime is 6390463. The next prime is 6390499. The reversal of 6390477 is 7740936.

It can be written as a sum of positive squares in only one way, i.e., 6380676 + 9801 = 2526^2 + 99^2 .

It is not a de Polignac number, because 6390477 - 2⁶ = 6390413 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 (6390407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355018 + ... + 355035.

Almost surely, 2^6390477 is an apocalyptic number.

It is an amenable number.

6390477 is a deficient number, since it is larger than the sum of its proper divisors (2840225).

6390477 is a wasteful number, since it uses less digits than its factorization.

6390477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710059 (or 710056 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 6390477 is about 2527.9392793341. The cubic root of 6390477 is about 185.5714204440.

The spelling of 6390477 in words is "six million, three hundred ninety thousand, four hundred seventy-seven".