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39455913427 = 721885942697
BaseRepresentation
bin100100101111110000…
…010111010111010011
310202211202021002000221
4210233300113113103
51121301203212202
630043101053511
72564516505400
oct445760272723
9122752232027
1039455913427
111580791a817
127791857297
13394a432848
141ca421b2a7
15105dd61037
hex92fc175d3

39455913427 has 12 divisors (see below), whose sum is σ = 45901203960. Its totient is φ = 33816769056.

The previous prime is 39455913421. The next prime is 39455913499. The reversal of 39455913427 is 72431955493.

It is a de Polignac number, because none of the positive numbers 2k-39455913427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39455913421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 902743 + ... + 945439.

It is an arithmetic number, because the mean of its divisors is an integer number (3825100330).

Almost surely, 239455913427 is an apocalyptic number.

39455913427 is a deficient number, since it is larger than the sum of its proper divisors (6445290533).

39455913427 is a wasteful number, since it uses less digits than its factorization.

39455913427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61570 (or 61563 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 52.

The spelling of 39455913427 in words is "thirty-nine billion, four hundred fifty-five million, nine hundred thirteen thousand, four hundred twenty-seven".

Divisors: 1 7 49 18859 42697 132013 298879 924091 2092153 805222723 5636559061 39455913427