8264421 has 18 divisors (see below), whose sum is σ = 13123110. Its totient is φ = 5008080.

The previous prime is 8264419. The next prime is 8264423. The reversal of 8264421 is 1244628.

8264421 = 199² + 200² + ... + 319².

It is an interprime number because it is at equal distance from previous prime (8264419) and next prime (8264423).

It can be written as a sum of positive squares in only one way, i.e., 4601025 + 3663396 = 2145^2 + 1914^2 .

It is not a de Polignac number, because 8264421 - 2¹ = 8264419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8264423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2706 + ... + 4883.

Almost surely, 2^8264421 is an apocalyptic number.

It is an amenable number.

8264421 is a deficient number, since it is larger than the sum of its proper divisors (4858689).

8264421 is a wasteful number, since it uses less digits than its factorization.

8264421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617 (or 7603 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 8264421 is about 2874.7906010699. The cubic root of 8264421 is about 202.1796672901.

The spelling of 8264421 in words is "eight million, two hundred sixty-four thousand, four hundred twenty-one".