397211855041 has 8 divisors (see below), whose sum is σ = 398515299624. Its totient is φ = 395909149440.

The previous prime is 397211855021. The next prime is 397211855093. The reversal of 397211855041 is 140558112793.

It can be written as a sum of positive squares in 4 ways, for example, as 1319215041 + 395892640000 = 36321^2 + 629200^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 397211855041 - 2¹³ = 397211846849 is a prime.

It is a super-2 number, since 2×397211855041² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397211854982 and 397211855000.

It is not an unprimeable number, because it can be changed into a prime (397211855021) 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, 902511 + ... + 1268443.

It is an arithmetic number, because the mean of its divisors is an integer number (49814412453).

Almost surely, 2^397211855041 is an apocalyptic number.

It is an amenable number.

397211855041 is a deficient number, since it is larger than the sum of its proper divisors (1303444583).

397211855041 is a wasteful number, since it uses less digits than its factorization.

397211855041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369491.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 397211855041 in words is "three hundred ninety-seven billion, two hundred eleven million, eight hundred fifty-five thousand, forty-one".