8904511421 has 4 divisors (see below), whose sum is σ = 9589473852. Its totient is φ = 8219548992.

The previous prime is 8904511411. The next prime is 8904511523. The reversal of 8904511421 is 1241154098.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2268616900 + 6635894521 = 47630^2 + 81461^2 .

It is a cyclic number.

It is not a de Polignac number, because 8904511421 - 2¹⁰ = 8904510397 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 (8904511411) 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, 342481196 + ... + 342481221.

It is an arithmetic number, because the mean of its divisors is an integer number (2397368463).

Almost surely, 2^8904511421 is an apocalyptic number.

It is an amenable number.

8904511421 is a deficient number, since it is larger than the sum of its proper divisors (684962431).

8904511421 is a wasteful number, since it uses less digits than its factorization.

8904511421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684962430.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 8904511421 is about 94363.7187747494. The cubic root of 8904511421 is about 2072.7011980215.

The spelling of 8904511421 in words is "eight billion, nine hundred four million, five hundred eleven thousand, four hundred twenty-one".