40090003 has 4 divisors (see below), whose sum is σ = 40503400. Its totient is φ = 39676608.

The previous prime is 40089991. The next prime is 40090021. The reversal of 40090003 is 30009004.

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

It is a cyclic number.

It is not a de Polignac number, because 40090003 - 2¹⁷ = 39958931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40090073) 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, 206553 + ... + 206746.

It is an arithmetic number, because the mean of its divisors is an integer number (10125850).

Almost surely, 2^40090003 is an apocalyptic number.

40090003 is a deficient number, since it is larger than the sum of its proper divisors (413397).

40090003 is an equidigital number, since it uses as much as digits as its factorization.

40090003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413396.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 40090003 is about 6331.6666842151. Note that the first 4 decimals coincide. The cubic root of 40090003 is about 342.2515021322.

Adding to 40090003 its reverse (30009004), we get a palindrome (70099007).

The spelling of 40090003 in words is "forty million, ninety thousand, three".