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89398813 = 738932831
BaseRepresentation
bin1010101010000…
…01111000011101
320020012221010011
411111001320131
5140341230223
612512043221
72133606640
oct525017035
9206187104
1089398813
1146510719
1225b33511
13156a140a
14bc31a57
157cad80d
hex5541e1d

89398813 has 8 divisors (see below), whose sum is σ = 102435840. Its totient is φ = 76428240.

The previous prime is 89398787. The next prime is 89398831. The reversal of 89398813 is 31889398.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89398813 - 225 = 55844381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89398843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13693 + ... + 19138.

It is an arithmetic number, because the mean of its divisors is an integer number (12804480).

Almost surely, 289398813 is an apocalyptic number.

It is an amenable number.

89398813 is a deficient number, since it is larger than the sum of its proper divisors (13037027).

89398813 is a wasteful number, since it uses less digits than its factorization.

89398813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33227.

The product of its digits is 373248, while the sum is 49.

The square root of 89398813 is about 9455.0945526737. The cubic root of 89398813 is about 447.1404066896.

The spelling of 89398813 in words is "eighty-nine million, three hundred ninety-eight thousand, eight hundred thirteen".

Divisors: 1 7 389 2723 32831 229817 12771259 89398813