149561329 has 4 divisors (see below), whose sum is σ = 154385920. Its totient is φ = 144736740.

The previous prime is 149561327. The next prime is 149561333. The reversal of 149561329 is 923165941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149561329 - 2¹ = 149561327 is a prime.

It is a super-2 number, since 2×149561329² = 44737182264492482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149561291 and 149561300.

It is not an unprimeable number, because it can be changed into a prime (149561327) 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, 2412249 + ... + 2412310.

It is an arithmetic number, because the mean of its divisors is an integer number (38596480).

Almost surely, 2^149561329 is an apocalyptic number.

It is an amenable number.

149561329 is a deficient number, since it is larger than the sum of its proper divisors (4824591).

149561329 is an equidigital number, since it uses as much as digits as its factorization.

149561329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824590.

The product of its digits is 58320, while the sum is 40.

The square root of 149561329 is about 12229.5269327967. The cubic root of 149561329 is about 530.8108260817.

The spelling of 149561329 in words is "one hundred forty-nine million, five hundred sixty-one thousand, three hundred twenty-nine".