401384075279 has 8 divisors (see below), whose sum is σ = 439489309440. Its totient is φ = 363548136600.

The previous prime is 401384075273. The next prime is 401384075299. The reversal of 401384075279 is 972570483104.

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

It is not a de Polignac number, because 401384075279 - 2¹² = 401384071183 is a prime.

It is a super-2 number, since 2×401384075279² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401384075273) 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, 67320749 + ... + 67326710.

It is an arithmetic number, because the mean of its divisors is an integer number (54936163680).

Almost surely, 2^401384075279 is an apocalyptic number.

401384075279 is a deficient number, since it is larger than the sum of its proper divisors (38105234161).

401384075279 is a wasteful number, since it uses less digits than its factorization.

401384075279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134647741.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 401384075279 in words is "four hundred one billion, three hundred eighty-four million, seventy-five thousand, two hundred seventy-nine".