397528741 has 4 divisors (see below), whose sum is σ = 400388800. Its totient is φ = 394668684.

The previous prime is 397528739. The next prime is 397528751. The reversal of 397528741 is 147825793.

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, and also an emirpimes, since its reverse is a distinct semiprime: 147825793 = 2663 ⋅55511.

It is a cyclic number.

It is not a de Polignac number, because 397528741 - 2¹ = 397528739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397528691 and 397528700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397528751) 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, 1429821 + ... + 1430098.

It is an arithmetic number, because the mean of its divisors is an integer number (100097200).

Almost surely, 2^397528741 is an apocalyptic number.

It is an amenable number.

397528741 is a deficient number, since it is larger than the sum of its proper divisors (2860059).

397528741 is a wasteful number, since it uses less digits than its factorization.

397528741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860058.

The product of its digits is 423360, while the sum is 46.

The square root of 397528741 is about 19938.1228053195. The cubic root of 397528741 is about 735.2857981218.

The spelling of 397528741 in words is "three hundred ninety-seven million, five hundred twenty-eight thousand, seven hundred forty-one".