4061639 has 8 divisors (see below), whose sum is σ = 4272480. Its totient is φ = 3853696.

The previous prime is 4061633. The next prime is 4061641. The reversal of 4061639 is 9361604.

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

It is a de Polignac number, because none of the positive numbers 2^k-4061639 is a prime.

It is a super-2 number, since 2×4061639² = 32993822732642, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4061633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507 + ... + 3795.

It is an arithmetic number, because the mean of its divisors is an integer number (534060).

Almost surely, 2^4061639 is an apocalyptic number.

4061639 is a deficient number, since it is larger than the sum of its proper divisors (210841).

4061639 is a wasteful number, since it uses less digits than its factorization.

4061639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 4061639 is about 2015.3508379436. The cubic root of 4061639 is about 159.5513341905.

The spelling of 4061639 in words is "four million, sixty-one thousand, six hundred thirty-nine".