403728097 has 4 divisors (see below), whose sum is σ = 416751616. Its totient is φ = 390704580.

The previous prime is 403728089. The next prime is 403728109. The reversal of 403728097 is 790827304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 403728097 - 2³ = 403728089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403728037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6511713 + ... + 6511774.

It is an arithmetic number, because the mean of its divisors is an integer number (104187904).

Almost surely, 2^403728097 is an apocalyptic number.

It is an amenable number.

403728097 is a deficient number, since it is larger than the sum of its proper divisors (13023519).

403728097 is a wasteful number, since it uses less digits than its factorization.

403728097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13023518.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 403728097 is about 20092.9862638683. The cubic root of 403728097 is about 739.0882958876.

The spelling of 403728097 in words is "four hundred three million, seven hundred twenty-eight thousand, ninety-seven".