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38880397 is a prime number
BaseRepresentation
bin1001010001010…
…0010010001101
32201011022212201
42110110102031
534423133042
63505201501
7651322633
oct224242215
981138781
1038880397
111aa46466
1211030291
13809406a
145241353
1536301b7
hex251448d

38880397 has 2 divisors, whose sum is σ = 38880398. Its totient is φ = 38880396.

The previous prime is 38880379. The next prime is 38880427. The reversal of 38880397 is 79308883.

Together with previous prime (38880379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34445161 + 4435236 = 5869^2 + 2106^2 .

It is a cyclic number.

It is not a de Polignac number, because 38880397 - 215 = 38847629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38884397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19440198 + 19440199.

It is an arithmetic number, because the mean of its divisors is an integer number (19440199).

Almost surely, 238880397 is an apocalyptic number.

It is an amenable number.

38880397 is a deficient number, since it is larger than the sum of its proper divisors (1).

38880397 is an equidigital number, since it uses as much as digits as its factorization.

38880397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 38880397 is about 6235.4147416190. The cubic root of 38880397 is about 338.7741234528.

It can be divided in two parts, 3 and 8880397, that added together give a square (8880400 = 29802).

The spelling of 38880397 in words is "thirty-eight million, eight hundred eighty thousand, three hundred ninety-seven".