397152107 has 4 divisors (see below), whose sum is σ = 433256856. Its totient is φ = 361047360.

The previous prime is 397152097. The next prime is 397152127. The reversal of 397152107 is 701251793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701251793 = 11 ⋅63750163.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397152107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397152127) 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, 18052358 + ... + 18052379.

It is an arithmetic number, because the mean of its divisors is an integer number (108314214).

Almost surely, 2^397152107 is an apocalyptic number.

397152107 is a deficient number, since it is larger than the sum of its proper divisors (36104749).

397152107 is a wasteful number, since it uses less digits than its factorization.

397152107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36104748.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 397152107 is about 19928.6754953760. The cubic root of 397152107 is about 735.0535120772.

The spelling of 397152107 in words is "three hundred ninety-seven million, one hundred fifty-two thousand, one hundred seven".