8977441621 has 4 divisors (see below), whose sum is σ = 9267036544. Its totient is φ = 8687846700.

The previous prime is 8977441619. The next prime is 8977441643. The reversal of 8977441621 is 1261447798.

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 8977441621 - 2¹ = 8977441619 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 (8977441691) 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, 144797415 + ... + 144797476.

It is an arithmetic number, because the mean of its divisors is an integer number (2316759136).

Almost surely, 2^8977441621 is an apocalyptic number.

It is an amenable number.

8977441621 is a deficient number, since it is larger than the sum of its proper divisors (289594923).

8977441621 is a wasteful number, since it uses less digits than its factorization.

8977441621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289594922.

The product of its digits is 677376, while the sum is 49.

The square root of 8977441621 is about 94749.3621139478. The cubic root of 8977441621 is about 2078.3444683060.

The spelling of 8977441621 in words is "eight billion, nine hundred seventy-seven million, four hundred forty-one thousand, six hundred twenty-one".