7854149 has 4 divisors (see below), whose sum is σ = 7872480. Its totient is φ = 7835820.

The previous prime is 7854131. The next prime is 7854151. The reversal of 7854149 is 9414587.

7854149 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7854149 - 2¹² = 7850053 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7854169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8507 + ... + 9384.

It is an arithmetic number, because the mean of its divisors is an integer number (1968120).

Almost surely, 2^7854149 is an apocalyptic number.

It is an amenable number.

7854149 is a deficient number, since it is larger than the sum of its proper divisors (18331).

7854149 is a wasteful number, since it uses less digits than its factorization.

7854149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18330.

The product of its digits is 40320, while the sum is 38.

The square root of 7854149 is about 2802.5254682161. The cubic root of 7854149 is about 198.7771129764. Note that the first 3 decimals are identical.

The spelling of 7854149 in words is "seven million, eight hundred fifty-four thousand, one hundred forty-nine".