63401399 has 2 divisors, whose sum is σ = 63401400. Its totient is φ = 63401398.

The previous prime is 63401389. The next prime is 63401419. The reversal of 63401399 is 99310436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63401399 - 2¹² = 63397303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63401329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31700699 + 31700700.

It is an arithmetic number, because the mean of its divisors is an integer number (31700700).

Almost surely, 2^63401399 is an apocalyptic number.

63401399 is a deficient number, since it is larger than the sum of its proper divisors (1).

63401399 is an equidigital number, since it uses as much as digits as its factorization.

63401399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 63401399 is about 7962.4995447410. The cubic root of 63401399 is about 398.7490061983.

The spelling of 63401399 in words is "sixty-three million, four hundred one thousand, three hundred ninety-nine".