63403394 has 4 divisors (see below), whose sum is σ = 95105094. Its totient is φ = 31701696.

The previous prime is 63403391. The next prime is 63403397. The reversal of 63403394 is 49330436.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (63403391) and next prime (63403397).

It can be written as a sum of positive squares in only one way, i.e., 60295225 + 3108169 = 7765^2 + 1763^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63403394.

It is not an unprimeable number, because it can be changed into a prime (63403391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15850847 + ... + 15850850.

Almost surely, 2^63403394 is an apocalyptic number.

63403394 is a deficient number, since it is larger than the sum of its proper divisors (31701700).

63403394 is a wasteful number, since it uses less digits than its factorization.

63403394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31701699.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 63403394 is about 7962.6248184879. The cubic root of 63403394 is about 398.7531885241.

The spelling of 63403394 in words is "sixty-three million, four hundred three thousand, three hundred ninety-four".