4379991 has 32 divisors (see below), whose sum is σ = 7415808. Its totient is φ = 2233440.

The previous prime is 4379987. The next prime is 4380001. The reversal of 4379991 is 1999734.

It is not a de Polignac number, because 4379991 - 2² = 4379987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4379911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15336 + ... + 15618.

It is an arithmetic number, because the mean of its divisors is an integer number (231744).

Almost surely, 2^4379991 is an apocalyptic number.

4379991 is a deficient number, since it is larger than the sum of its proper divisors (3035817).

4379991 is a wasteful number, since it uses less digits than its factorization.

4379991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its digits is 61236, while the sum is 42.

The square root of 4379991 is about 2092.8428034614. The cubic root of 4379991 is about 163.6154857483.

The spelling of 4379991 in words is "four million, three hundred seventy-nine thousand, nine hundred ninety-one".