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397930147 is a prime number
BaseRepresentation
bin10111101101111…
…110111010100011
31000201202221112121
4113231332322203
51303332231042
6103253005111
712601231126
oct2755767243
91021687477
10397930147
1119469189a
12b1323797
1364598434
143abc63bd
1524e05367
hex17b7eea3

397930147 has 2 divisors, whose sum is σ = 397930148. Its totient is φ = 397930146.

The previous prime is 397930123. The next prime is 397930177. The reversal of 397930147 is 741039793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397930147 - 27 = 397930019 is a prime.

It is not a weakly prime, because it can be changed into another prime (397930177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198965073 + 198965074.

It is an arithmetic number, because the mean of its divisors is an integer number (198965074).

Almost surely, 2397930147 is an apocalyptic number.

397930147 is a deficient number, since it is larger than the sum of its proper divisors (1).

397930147 is an equidigital number, since it uses as much as digits as its factorization.

397930147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 397930147 is about 19948.1865591838. The cubic root of 397930147 is about 735.5332006482.

The spelling of 397930147 in words is "three hundred ninety-seven million, nine hundred thirty thousand, one hundred forty-seven".