63401394 has 48 divisors (see below), whose sum is σ = 148154400. Its totient is φ = 18035136.

The previous prime is 63401389. The next prime is 63401399. The reversal of 63401394 is 49310436.

It is an interprime number because it is at equal distance from previous prime (63401389) and next prime (63401399).

It is a super-2 number, since 2×63401394² = 8039473522286472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63401399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111142 + ... + 111710.

It is an arithmetic number, because the mean of its divisors is an integer number (3086550).

Almost surely, 2^63401394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63401394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74077200).

63401394 is an abundant number, since it is smaller than the sum of its proper divisors (84753006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63401394 is a wasteful number, since it uses less digits than its factorization.

63401394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 63401394 is about 7962.4992307692. The cubic root of 63401394 is about 398.7489957162.

The spelling of 63401394 in words is "sixty-three million, four hundred one thousand, three hundred ninety-four".