9890477 has 4 divisors (see below), whose sum is σ = 9896796. Its totient is φ = 9884160.

The previous prime is 9890467. The next prime is 9890501. The reversal of 9890477 is 7740989.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7740989 = 43 ⋅180023.

It can be written as a sum of positive squares in 2 ways, for example, as 2128681 + 7761796 = 1459^2 + 2786^2 .

It is a cyclic number.

It is not a de Polignac number, because 9890477 - 2¹² = 9886381 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133 + ... + 4589.

It is an arithmetic number, because the mean of its divisors is an integer number (2474199).

Almost surely, 2^9890477 is an apocalyptic number.

It is an amenable number.

9890477 is a deficient number, since it is larger than the sum of its proper divisors (6319).

9890477 is a wasteful number, since it uses less digits than its factorization.

9890477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6318.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 9890477 is about 3144.9128763767. The cubic root of 9890477 is about 214.6540461162.

The spelling of 9890477 in words is "nine million, eight hundred ninety thousand, four hundred seventy-seven".