400444271357 has 4 divisors (see below), whose sum is σ = 431247676860. Its totient is φ = 369640865856.

The previous prime is 400444271243. The next prime is 400444271399. The reversal of 400444271357 is 753172444004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31338204676 + 369106066681 = 177026^2 + 607541^2 .

It is a cyclic number.

It is not a de Polignac number, because 400444271357 - 2¹⁸ = 400444009213 is a prime.

It is a super-2 number, since 2×400444271357² (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 (400404271357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15401702732 + ... + 15401702757.

It is an arithmetic number, because the mean of its divisors is an integer number (107811919215).

Almost surely, 2^400444271357 is an apocalyptic number.

It is an amenable number.

400444271357 is a deficient number, since it is larger than the sum of its proper divisors (30803405503).

400444271357 is a wasteful number, since it uses less digits than its factorization.

400444271357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30803405502.

The product of its (nonzero) digits is 376320, while the sum is 41.

The spelling of 400444271357 in words is "four hundred billion, four hundred forty-four million, two hundred seventy-one thousand, three hundred fifty-seven".