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86944945 = 523756043
BaseRepresentation
bin1010010111010…
…10110010110001
320001121021001011
411023222302301
5134224214240
612343310521
72104006543
oct513526261
9201537034
1086944945
114509502a
122514b441
1315022519
14b793693
1579766ea
hex52eacb1

86944945 has 8 divisors (see below), whose sum is σ = 108870336. Its totient is φ = 66531696.

The previous prime is 86944943. The next prime is 86944961. The reversal of 86944945 is 54944968.

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

It is a cyclic number.

It is not a de Polignac number, because 86944945 - 21 = 86944943 is a prime.

It is a super-2 number, since 2×869449452 = 15118846922106050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86944943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377907 + ... + 378136.

It is an arithmetic number, because the mean of its divisors is an integer number (13608792).

Almost surely, 286944945 is an apocalyptic number.

It is an amenable number.

86944945 is a deficient number, since it is larger than the sum of its proper divisors (21925391).

86944945 is a wasteful number, since it uses less digits than its factorization.

86944945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756071.

The product of its digits is 1244160, while the sum is 49.

The square root of 86944945 is about 9324.4273282599. The cubic root of 86944945 is about 443.0112745051.

The spelling of 86944945 in words is "eighty-six million, nine hundred forty-four thousand, nine hundred forty-five".

Divisors: 1 5 23 115 756043 3780215 17388989 86944945