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149401729 = 1727192
BaseRepresentation
bin10001110011110…
…11000010000001
3101102010101122101
420321323002001
5301221323404
622454110401
73462615361
oct1071730201
9342111571
10149401729
1177373804
124204b401
1324c4c7b9
1415bb09a1
15d1b22a4
hex8e7b081

149401729 has 9 divisors (see below), whose sum is σ = 158928067. Its totient is φ = 140417824.

The previous prime is 149401723. The next prime is 149401739. The reversal of 149401729 is 927104941.

The square root of 149401729 is 12223.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 116316225 + 33085504 = 10785^2 + 5752^2 .

It is not a de Polignac number, because 149401729 - 217 = 149270657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149401723) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 207432 + ... + 208150.

Almost surely, 2149401729 is an apocalyptic number.

149401729 is the 12223-rd square number.

149401729 is the 6112-nd centered octagonal number.

It is an amenable number.

149401729 is a deficient number, since it is larger than the sum of its proper divisors (9526338).

149401729 is an frugal number, since it uses more digits than its factorization.

149401729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The cubic root of 149401729 is about 530.6219457946.

The spelling of 149401729 in words is "one hundred forty-nine million, four hundred one thousand, seven hundred twenty-nine".

Divisors: 1 17 289 719 12223 207791 516961 8788337 149401729