2820009477 has 8 divisors (see below), whose sum is σ = 3760659616. Its totient is φ = 1879682832.

The previous prime is 2820009449. The next prime is 2820009547. The reversal of 2820009477 is 7749000282.

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

It is not a de Polignac number, because 2820009477 - 2⁷ = 2820009349 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 (2820009407) 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, 59743 + ... + 95964.

It is an arithmetic number, because the mean of its divisors is an integer number (470082452).

Almost surely, 2^2820009477 is an apocalyptic number.

It is an amenable number.

2820009477 is a deficient number, since it is larger than the sum of its proper divisors (940650139).

2820009477 is a wasteful number, since it uses less digits than its factorization.

2820009477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161747.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 2820009477 is about 53103.7614204493. The cubic root of 2820009477 is about 1412.8092270175.

The spelling of 2820009477 in words is "two billion, eight hundred twenty million, nine thousand, four hundred seventy-seven".