401442230309 has 16 divisors (see below), whose sum is σ = 409799168496. Its totient is φ = 393146265600.

The previous prime is 401442230281. The next prime is 401442230327. The reversal of 401442230309 is 903032244104.

It can be written as a sum of positive squares in 8 ways, for example, as 146265707809 + 255176522500 = 382447^2 + 505150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401442230309 is a prime.

It is a super-2 number, since 2×401442230309² (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 (401442230509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13473989 + ... + 13503749.

It is an arithmetic number, because the mean of its divisors is an integer number (25612448031).

Almost surely, 2^401442230309 is an apocalyptic number.

It is an amenable number.

401442230309 is a deficient number, since it is larger than the sum of its proper divisors (8356938187).

401442230309 is a wasteful number, since it uses less digits than its factorization.

401442230309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30776.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 401442230309 in words is "four hundred one billion, four hundred forty-two million, two hundred thirty thousand, three hundred nine".