4029961 has 8 divisors (see below), whose sum is σ = 4422600. Its totient is φ = 3649152.

The previous prime is 4029959. The next prime is 4029973. The reversal of 4029961 is 1699204.

4029961 = 1419² + 1420².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 207936 + 3822025 = 456^2 + 1955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4029961 - 2¹ = 4029959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4029911) 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 7 ways as a sum of consecutive naturals, for example, 2236 + ... + 3613.

It is an arithmetic number, because the mean of its divisors is an integer number (552825).

Almost surely, 2^4029961 is an apocalyptic number.

4029961 is the 1420-th centered square number.

It is an amenable number.

4029961 is a deficient number, since it is larger than the sum of its proper divisors (392639).

4029961 is a wasteful number, since it uses less digits than its factorization.

4029961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 4029961 is about 2007.4762763231. The cubic root of 4029961 is about 159.1354541040.

The spelling of 4029961 in words is "four million, twenty-nine thousand, nine hundred sixty-one".