8402149 has 4 divisors (see below), whose sum is σ = 9602464. Its totient is φ = 7201836.

The previous prime is 8402111. The next prime is 8402159. The reversal of 8402149 is 9412048.

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 8402149 - 2⁹ = 8401637 is a prime.

It is a super-2 number, since 2×8402149² = 141192215636402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8402159) 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, 600147 + ... + 600160.

It is an arithmetic number, because the mean of its divisors is an integer number (2400616).

Almost surely, 2^8402149 is an apocalyptic number.

It is an amenable number.

8402149 is a deficient number, since it is larger than the sum of its proper divisors (1200315).

8402149 is a wasteful number, since it uses less digits than its factorization.

8402149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200314.

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

The square root of 8402149 is about 2898.6460632509. The cubic root of 8402149 is about 203.2966050894.

The spelling of 8402149 in words is "eight million, four hundred two thousand, one hundred forty-nine".