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149037839 = 1071392877
BaseRepresentation
bin10001110001000…
…10001100001111
3101101102220110222
420320202030033
5301123202324
622442221555
73456541436
oct1070421417
9341386428
10149037839
1177145375
1241ab48bb
1324b52c92
1415b1811d
15d13e55e
hex8e2230f

149037839 has 4 divisors (see below), whose sum is σ = 150430824. Its totient is φ = 147644856.

The previous prime is 149037821. The next prime is 149037851. The reversal of 149037839 is 938730941.

It is a happy number.

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 149037839 - 220 = 147989263 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 149037839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149037809) 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, 696332 + ... + 696545.

It is an arithmetic number, because the mean of its divisors is an integer number (37607706).

Almost surely, 2149037839 is an apocalyptic number.

149037839 is a deficient number, since it is larger than the sum of its proper divisors (1392985).

149037839 is a wasteful number, since it uses less digits than its factorization.

149037839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392984.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 149037839 is about 12208.1054631749. The cubic root of 149037839 is about 530.1907928255.

The spelling of 149037839 in words is "one hundred forty-nine million, thirty-seven thousand, eight hundred thirty-nine".

Divisors: 1 107 1392877 149037839