401533360989 has 4 divisors (see below), whose sum is σ = 535377814656. Its totient is φ = 267688907324.

The previous prime is 401533360957. The next prime is 401533360999. The reversal of 401533360989 is 989063335104.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 401533360989 - 2⁵ = 401533360957 is a prime.

It is a super-2 number, since 2×401533360989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401533360999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66922226829 + ... + 66922226834.

It is an arithmetic number, because the mean of its divisors is an integer number (133844453664).

Almost surely, 2^401533360989 is an apocalyptic number.

It is an amenable number.

401533360989 is a deficient number, since it is larger than the sum of its proper divisors (133844453667).

401533360989 is a wasteful number, since it uses less digits than its factorization.

401533360989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133844453666.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 401533360989 in words is "four hundred one billion, five hundred thirty-three million, three hundred sixty thousand, nine hundred eighty-nine".