63954409 has 4 divisors (see below), whose sum is σ = 64040320. Its totient is φ = 63868500.

The previous prime is 63954379. The next prime is 63954439. The reversal of 63954409 is 90445936.

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 an interprime number because it is at equal distance from previous prime (63954379) and next prime (63954439).

It is a cyclic number.

It is not a de Polignac number, because 63954409 - 2⁵ = 63954377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63954439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41829 + ... + 43330.

It is an arithmetic number, because the mean of its divisors is an integer number (16010080).

Almost surely, 2^63954409 is an apocalyptic number.

It is an amenable number.

63954409 is a deficient number, since it is larger than the sum of its proper divisors (85911).

63954409 is an equidigital number, since it uses as much as digits as its factorization.

63954409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85910.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 63954409 is about 7997.1500548633. The cubic root of 63954409 is about 399.9049961875.

The spelling of 63954409 in words is "sixty-three million, nine hundred fifty-four thousand, four hundred nine".