3920009477 has 4 divisors (see below), whose sum is σ = 3934914720. Its totient is φ = 3905104236.

The previous prime is 3920009459. The next prime is 3920009497. The reversal of 3920009477 is 7749000293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3920009477 - 2¹⁰ = 3920008453 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 (3920009497) 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, 7452227 + ... + 7452752.

It is an arithmetic number, because the mean of its divisors is an integer number (983728680).

Almost surely, 2^3920009477 is an apocalyptic number.

It is an amenable number.

3920009477 is a deficient number, since it is larger than the sum of its proper divisors (14905243).

3920009477 is a wasteful number, since it uses less digits than its factorization.

3920009477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14905242.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 3920009477 is about 62609.9790528635. The cubic root of 3920009477 is about 1576.7483032690.

The spelling of 3920009477 in words is "three billion, nine hundred twenty million, nine thousand, four hundred seventy-seven".