403634641 has 2 divisors, whose sum is σ = 403634642. Its totient is φ = 403634640.

The previous prime is 403634617. The next prime is 403634677. The reversal of 403634641 is 146436304.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221384641 + 182250000 = 14879^2 + 13500^2 .

It is a cyclic number.

It is not a de Polignac number, because 403634641 - 2¹³ = 403626449 is a prime.

It is not a weakly prime, because it can be changed into another prime (403634611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201817320 + 201817321.

It is an arithmetic number, because the mean of its divisors is an integer number (201817321).

Almost surely, 2^403634641 is an apocalyptic number.

It is an amenable number.

403634641 is a deficient number, since it is larger than the sum of its proper divisors (1).

403634641 is an equidigital number, since it uses as much as digits as its factorization.

403634641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 403634641 is about 20090.6605416547. The cubic root of 403634641 is about 739.0312628112.

The spelling of 403634641 in words is "four hundred three million, six hundred thirty-four thousand, six hundred forty-one".