1401433993 has 2 divisors, whose sum is σ = 1401433994. Its totient is φ = 1401433992.

The previous prime is 1401433973. The next prime is 1401434017. The reversal of 1401433993 is 3993341041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729432064 + 672001929 = 27008^2 + 25923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401433993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401433933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700716996 + 700716997.

It is an arithmetic number, because the mean of its divisors is an integer number (700716997).

Almost surely, 2^1401433993 is an apocalyptic number.

It is an amenable number.

1401433993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401433993 is an equidigital number, since it uses as much as digits as its factorization.

1401433993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 1401433993 is about 37435.7315008001. The cubic root of 1401433993 is about 1119.0707622503.

The spelling of 1401433993 in words is "one billion, four hundred one million, four hundred thirty-three thousand, nine hundred ninety-three".