400148803 has 2 divisors, whose sum is σ = 400148804. Its totient is φ = 400148802.

The previous prime is 400148789. The next prime is 400148809. The reversal of 400148803 is 308841004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400148803 - 2¹⁷ = 400017731 is a prime.

It is not a weakly prime, because it can be changed into another prime (400148809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200074401 + 200074402.

It is an arithmetic number, because the mean of its divisors is an integer number (200074402).

Almost surely, 2^400148803 is an apocalyptic number.

400148803 is a deficient number, since it is larger than the sum of its proper divisors (1).

400148803 is an equidigital number, since it uses as much as digits as its factorization.

400148803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 400148803 is about 20003.7197290904. The cubic root of 400148803 is about 736.8976542240.

Adding to 400148803 its reverse (308841004), we get a palindrome (708989807).

The spelling of 400148803 in words is "four hundred million, one hundred forty-eight thousand, eight hundred three".