40203673 has 2 divisors, whose sum is σ = 40203674. Its totient is φ = 40203672.

The previous prime is 40203641. The next prime is 40203689. The reversal of 40203673 is 37630204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39287824 + 915849 = 6268^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 40203673 - 2⁵ = 40203641 is a prime.

It is equal to p_2445280 and since 40203673 and 2445280 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40203973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20101836 + 20101837.

It is an arithmetic number, because the mean of its divisors is an integer number (20101837).

Almost surely, 2^40203673 is an apocalyptic number.

It is an amenable number.

40203673 is a deficient number, since it is larger than the sum of its proper divisors (1).

40203673 is an equidigital number, since it uses as much as digits as its factorization.

40203673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 40203673 is about 6340.6366399597. The cubic root of 40203673 is about 342.5746667978.

Adding to 40203673 its reverse (37630204), we get a palindrome (77833877).

The spelling of 40203673 in words is "forty million, two hundred three thousand, six hundred seventy-three".