8403401 has 8 divisors (see below), whose sum is σ = 8701224. Its totient is φ = 8110080.

The previous prime is 8403391. The next prime is 8403419. The reversal of 8403401 is 1043048.

8403401 = 245² + 246² + ... + 341².

It can be written as a sum of positive squares in 4 ways, for example, as 697225 + 7706176 = 835^2 + 2776^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8403401 - 2⁶ = 8403337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8403431) 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, 2921 + ... + 5033.

It is an arithmetic number, because the mean of its divisors is an integer number (1087653).

Almost surely, 2^8403401 is an apocalyptic number.

It is an amenable number.

8403401 is a deficient number, since it is larger than the sum of its proper divisors (297823).

8403401 is a wasteful number, since it uses less digits than its factorization.

8403401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8403401 is about 2898.8620181030. The cubic root of 8403401 is about 203.3067022962.

Adding to 8403401 its reverse (1043048), we get a palindrome (9446449).

The spelling of 8403401 in words is "eight million, four hundred three thousand, four hundred one".