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97989899 = 713998557
BaseRepresentation
bin1011101011100…
…11010100001011
320211101101212112
411311303110023
5200041134044
613420132535
72266620560
oct565632413
9224341775
1097989899
1150349297
122899714b
13173bb8b7
14d02a867
15890909e
hex5d7350b

97989899 has 4 divisors (see below), whose sum is σ = 111988464. Its totient is φ = 83991336.

The previous prime is 97989847. The next prime is 97989901. The reversal of 97989899 is 99898979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97989899 - 28 = 97989643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97989809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6999272 + ... + 6999285.

It is an arithmetic number, because the mean of its divisors is an integer number (27997116).

Almost surely, 297989899 is an apocalyptic number.

97989899 is a deficient number, since it is larger than the sum of its proper divisors (13998565).

97989899 is a wasteful number, since it uses less digits than its factorization.

97989899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13998564.

The product of its digits is 26453952, while the sum is 68.

The square root of 97989899 is about 9898.9847459222. The cubic root of 97989899 is about 461.0277885198.

The spelling of 97989899 in words is "ninety-seven million, nine hundred eighty-nine thousand, eight hundred ninety-nine".

Divisors: 1 7 13998557 97989899