10400045 has 4 divisors (see below), whose sum is σ = 12480060. Its totient is φ = 8320032.

The previous prime is 10400029. The next prime is 10400057. The reversal of 10400045 is 54000401.

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 3104644 + 7295401 = 1762^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 10400045 - 2⁴ = 10400029 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1040000 + ... + 1040009.

It is an arithmetic number, because the mean of its divisors is an integer number (3120015).

Almost surely, 2^10400045 is an apocalyptic number.

It is an amenable number.

10400045 is a deficient number, since it is larger than the sum of its proper divisors (2080015).

10400045 is an equidigital number, since it uses as much as digits as its factorization.

10400045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080014.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 10400045 is about 3224.9100762657. The cubic root of 10400045 is about 218.2788914366.

Adding to 10400045 its reverse (54000401), we get a palindrome (64400446).

The spelling of 10400045 in words is "ten million, four hundred thousand, forty-five".