4156149 has 4 divisors (see below), whose sum is σ = 5541536. Its totient is φ = 2770764.

The previous prime is 4156093. The next prime is 4156151. The reversal of 4156149 is 9416514.

It is a happy number.

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 de Polignac number, because none of the positive numbers 2^k-4156149 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156199) 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, 692689 + ... + 692694.

It is an arithmetic number, because the mean of its divisors is an integer number (1385384).

Almost surely, 2^4156149 is an apocalyptic number.

It is an amenable number.

4156149 is a deficient number, since it is larger than the sum of its proper divisors (1385387).

4156149 is a wasteful number, since it uses less digits than its factorization.

4156149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385386.

The product of its digits is 4320, while the sum is 30.

The square root of 4156149 is about 2038.6635328077. The cubic root of 4156149 is about 160.7793874101.

The spelling of 4156149 in words is "four million, one hundred fifty-six thousand, one hundred forty-nine".