8240149 has 4 divisors (see below), whose sum is σ = 8261100. Its totient is φ = 8219200.

The previous prime is 8240143. The next prime is 8240161. The reversal of 8240149 is 9410428.

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 8122500 + 117649 = 2850^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 8240149 - 2¹¹ = 8238101 is a prime.

It is a Duffinian number.

8240149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240143) 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, 9874 + ... + 10675.

It is an arithmetic number, because the mean of its divisors is an integer number (2065275).

Almost surely, 2^8240149 is an apocalyptic number.

It is an amenable number.

8240149 is a deficient number, since it is larger than the sum of its proper divisors (20951).

8240149 is a wasteful number, since it uses less digits than its factorization.

8240149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20950.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 8240149 is about 2870.5659720689. The cubic root of 8240149 is about 201.9815442407.

The spelling of 8240149 in words is "eight million, two hundred forty thousand, one hundred forty-nine".