4377981 has 16 divisors (see below), whose sum is σ = 6188544. Its totient is φ = 2747184.

The previous prime is 4377973. The next prime is 4377983. The reversal of 4377981 is 1897734.

It is not a de Polignac number, because 4377981 - 2³ = 4377973 is a prime.

It is a super-2 number, since 2×4377981² = 38333435272722, which contains 22 as substring.

It is a Curzon number.

4377981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4377983) 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 15 ways as a sum of consecutive naturals, for example, 4150 + ... + 5096.

It is an arithmetic number, because the mean of its divisors is an integer number (386784).

Almost surely, 2^4377981 is an apocalyptic number.

It is an amenable number.

4377981 is a deficient number, since it is larger than the sum of its proper divisors (1810563).

4377981 is a wasteful number, since it uses less digits than its factorization.

4377981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 42336, while the sum is 39.

The square root of 4377981 is about 2092.3625402879. The cubic root of 4377981 is about 163.5904539278.

The spelling of 4377981 in words is "four million, three hundred seventy-seven thousand, nine hundred eighty-one".