3996477789 has 4 divisors (see below), whose sum is σ = 5328637056. Its totient is φ = 2664318524.

The previous prime is 3996477767. The next prime is 3996477811. The reversal of 3996477789 is 9877746993.

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 an interprime number because it is at equal distance from previous prime (3996477767) and next prime (3996477811).

It is a cyclic number.

It is not a de Polignac number, because 3996477789 - 2¹³ = 3996469597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996477739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666079629 + ... + 666079634.

It is an arithmetic number, because the mean of its divisors is an integer number (1332159264).

Almost surely, 2^3996477789 is an apocalyptic number.

It is an amenable number.

3996477789 is a deficient number, since it is larger than the sum of its proper divisors (1332159267).

3996477789 is a wasteful number, since it uses less digits than its factorization.

3996477789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332159266.

The product of its digits is 144027072, while the sum is 69.

The square root of 3996477789 is about 63217.7015479051. The cubic root of 3996477789 is about 1586.9349850220.

The spelling of 3996477789 in words is "three billion, nine hundred ninety-six million, four hundred seventy-seven thousand, seven hundred eighty-nine".