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90150977 = 743129881
BaseRepresentation
bin1010101111110…
…01100001000001
320021122010220002
411113321201001
5141034312402
612540125345
72143161560
oct527714101
9207563802
1090150977
1146984844
1226236855
13158a5897
14bd89bd7
157dab602
hex55f9841

90150977 has 8 divisors (see below), whose sum is σ = 103272192. Its totient is φ = 77090400.

The previous prime is 90150971. The next prime is 90150989. The reversal of 90150977 is 77905109.

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 90150977 - 224 = 73373761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90150977.

It is not an unprimeable number, because it can be changed into a prime (90150971) 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, 11924 + ... + 17957.

It is an arithmetic number, because the mean of its divisors is an integer number (12909024).

Almost surely, 290150977 is an apocalyptic number.

It is an amenable number.

90150977 is a deficient number, since it is larger than the sum of its proper divisors (13121215).

90150977 is a wasteful number, since it uses less digits than its factorization.

90150977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30319.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 90150977 is about 9494.7868327836. The cubic root of 90150977 is about 448.3909231985.

The spelling of 90150977 in words is "ninety million, one hundred fifty thousand, nine hundred seventy-seven".

Divisors: 1 7 431 3017 29881 209167 12878711 90150977