8400041 has 4 divisors (see below), whose sum is σ = 9046212. Its totient is φ = 7753872.

The previous prime is 8400031. The next prime is 8400043. The reversal of 8400041 is 1400048.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1488400 + 6911641 = 1220^2 + 2629^2 .

It is a cyclic number.

It is not a de Polignac number, because 8400041 - 2¹⁸ = 8137897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8399992 and 8400019.

It is not an unprimeable number, because it can be changed into a prime (8400043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323066 + ... + 323091.

It is an arithmetic number, because the mean of its divisors is an integer number (2261553).

Almost surely, 2^8400041 is an apocalyptic number.

It is an amenable number.

8400041 is a deficient number, since it is larger than the sum of its proper divisors (646171).

8400041 is a wasteful number, since it uses less digits than its factorization.

8400041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646170.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 8400041 is about 2898.2824224012. The cubic root of 8400041 is about 203.2796020946.

Adding to 8400041 its reverse (1400048), we get a palindrome (9800089).

It can be divided in two parts, 84000 and 41, that multiplied together give a triangular number (3444000 = T₂₆₂₄).

The spelling of 8400041 in words is "eight million, four hundred thousand, forty-one".