544666397 has 4 divisors (see below), whose sum is σ = 594181536. Its totient is φ = 495151260.

The previous prime is 544666363. The next prime is 544666399. The reversal of 544666397 is 793666445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 544666397 - 2⁶ = 544666333 is a prime.

It is a super-2 number, since 2×544666397² = 593322968041923218, which 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 (544666399) 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, 24757553 + ... + 24757574.

It is an arithmetic number, because the mean of its divisors is an integer number (148545384).

Almost surely, 2^544666397 is an apocalyptic number.

It is an amenable number.

544666397 is a deficient number, since it is larger than the sum of its proper divisors (49515139).

544666397 is a wasteful number, since it uses less digits than its factorization.

544666397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49515138.

The product of its digits is 3265920, while the sum is 50.

The square root of 544666397 is about 23338.0889748925. The cubic root of 544666397 is about 816.6642180314.

The spelling of 544666397 in words is "five hundred forty-four million, six hundred sixty-six thousand, three hundred ninety-seven".