401817449969 has 8 divisors (see below), whose sum is σ = 443280789672. Its totient is φ = 361861868160.

The previous prime is 401817449899. The next prime is 401817449993. The reversal of 401817449969 is 969944718104.

It can be written as a sum of positive squares in 4 ways, for example, as 30375958369 + 371441491600 = 174287^2 + 609460^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401817449969 - 2³⁶ = 333097973233 is a prime.

It is a super-2 number, since 2×401817449969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401817449269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376938914 + ... + 376939979.

It is an arithmetic number, because the mean of its divisors is an integer number (55410098709).

Almost surely, 2^401817449969 is an apocalyptic number.

It is an amenable number.

401817449969 is a deficient number, since it is larger than the sum of its proper divisors (41463339703).

401817449969 is a wasteful number, since it uses less digits than its factorization.

401817449969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753878947.

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 401817449969 in words is "four hundred one billion, eight hundred seventeen million, four hundred forty-nine thousand, nine hundred sixty-nine".