9215044421 has 16 divisors (see below), whose sum is σ = 10303651008. Its totient is φ = 8168476800.

The previous prime is 9215044411. The next prime is 9215044457. The reversal of 9215044421 is 1244405129.

It is a de Polignac number, because none of the positive numbers 2^k-9215044421 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 (9215044411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017911 + ... + 1026923.

It is an arithmetic number, because the mean of its divisors is an integer number (643978188).

Almost surely, 2^9215044421 is an apocalyptic number.

It is an amenable number.

9215044421 is a deficient number, since it is larger than the sum of its proper divisors (1088606587).

9215044421 is a wasteful number, since it uses less digits than its factorization.

9215044421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 9215044421 is about 95995.0228970232. The cubic root of 9215044421 is about 2096.5206497421.

The spelling of 9215044421 in words is "nine billion, two hundred fifteen million, forty-four thousand, four hundred twenty-one".