4099531 has 2 divisors, whose sum is σ = 4099532. Its totient is φ = 4099530.

The previous prime is 4099523. The next prime is 4099541. The reversal of 4099531 is 1359904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4099531 - 2³ = 4099523 is a prime.

It is a super-2 number, since 2×4099531² = 33612308839922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4099493 and 4099502.

It is not a weakly prime, because it can be changed into another prime (4099541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049765 + 2049766.

It is an arithmetic number, because the mean of its divisors is an integer number (2049766).

Almost surely, 2^4099531 is an apocalyptic number.

4099531 is a deficient number, since it is larger than the sum of its proper divisors (1).

4099531 is an equidigital number, since it uses as much as digits as its factorization.

4099531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 4099531 is about 2024.7298585243. The cubic root of 4099531 is about 160.0459633573.

The spelling of 4099531 in words is "four million, ninety-nine thousand, five hundred thirty-one".