63903397 has 4 divisors (see below), whose sum is σ = 64778860. Its totient is φ = 63027936.

The previous prime is 63903383. The next prime is 63903401. The reversal of 63903397 is 79330936.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52620516 + 11282881 = 7254^2 + 3359^2 .

It is a cyclic number.

It is not a de Polignac number, because 63903397 - 2¹⁵ = 63870629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63903377) 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, 437622 + ... + 437767.

It is an arithmetic number, because the mean of its divisors is an integer number (16194715).

Almost surely, 2^63903397 is an apocalyptic number.

It is an amenable number.

63903397 is a deficient number, since it is larger than the sum of its proper divisors (875463).

63903397 is an equidigital number, since it uses as much as digits as its factorization.

63903397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875462.

The product of its (nonzero) digits is 91854, while the sum is 40.

The square root of 63903397 is about 7993.9600324245. The cubic root of 63903397 is about 399.7986424048.

The spelling of 63903397 in words is "sixty-three million, nine hundred three thousand, three hundred ninety-seven".