4078631 has 2 divisors, whose sum is σ = 4078632. Its totient is φ = 4078630.

The previous prime is 4078619. The next prime is 4078637. The reversal of 4078631 is 1368704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4078631 - 2¹⁰ = 4077607 is a prime.

It is a super-2 number, since 2×4078631² = 33270461668322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4078594 and 4078603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4078637) 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 as a sum of consecutive naturals, namely, 2039315 + 2039316.

It is an arithmetic number, because the mean of its divisors is an integer number (2039316).

Almost surely, 2^4078631 is an apocalyptic number.

4078631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4078631 is an equidigital number, since it uses as much as digits as its factorization.

4078631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 4078631 is about 2019.5620812443. The cubic root of 4078631 is about 159.7735207167.

The spelling of 4078631 in words is "four million, seventy-eight thousand, six hundred thirty-one".