4155949 has 4 divisors (see below), whose sum is σ = 4749664.
Its totient is φ = 3562236.
The previous prime is 4155929. The next prime is 4155989. The reversal of 4155949 is 9495514.
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 4155949 - 25 = 4155917 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (4155919) 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, 296847 + ... + 296860.
It is an arithmetic number, because the mean of its divisors is an integer number (1187416).
Almost surely, 24155949 is an apocalyptic number.
It is an amenable number.
4155949 is a deficient number, since it is larger than the sum of its proper divisors (593715).
4155949 is an equidigital number, since it uses as much as digits as its factorization.
4155949 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 593714.
The product of its digits is 32400, while the sum is 37.
The square root of 4155949 is about 2038.6144804744.
The cubic root of 4155949 is about 160.7768083885.
The spelling of 4155949 in words is "four million, one hundred fifty-five thousand, nine hundred forty-nine".