397092461 has 4 divisors (see below), whose sum is σ = 399286524. Its totient is φ = 394898400.

The previous prime is 397092439. The next prime is 397092463. The reversal of 397092461 is 164290793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164290793 = 31 ⋅5299703.

It can be written as a sum of positive squares in 2 ways, for example, as 203604361 + 193488100 = 14269^2 + 13910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397092461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397092463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096760 + ... + 1097121.

It is an arithmetic number, because the mean of its divisors is an integer number (99821631).

Almost surely, 2^397092461 is an apocalyptic number.

It is an amenable number.

397092461 is a deficient number, since it is larger than the sum of its proper divisors (2194063).

397092461 is a wasteful number, since it uses less digits than its factorization.

397092461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194062.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 397092461 is about 19927.1789523756. The cubic root of 397092461 is about 735.0167124094.

The spelling of 397092461 in words is "three hundred ninety-seven million, ninety-two thousand, four hundred sixty-one".