149561339 has 4 divisors (see below), whose sum is σ = 149585856. Its totient is φ = 149536824.

The previous prime is 149561333. The next prime is 149561351. The reversal of 149561339 is 933165941.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 149561339 - 2¹⁶ = 149495803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149561296 and 149561305.

It is not an unprimeable number, because it can be changed into a prime (149561333) 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, 4877 + ... + 17969.

It is an arithmetic number, because the mean of its divisors is an integer number (37396464).

Almost surely, 2^149561339 is an apocalyptic number.

149561339 is a deficient number, since it is larger than the sum of its proper divisors (24517).

149561339 is a wasteful number, since it uses less digits than its factorization.

149561339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24516.

The product of its digits is 87480, while the sum is 41.

The square root of 149561339 is about 12229.5273416433. The cubic root of 149561339 is about 530.8108379121.

The spelling of 149561339 in words is "one hundred forty-nine million, five hundred sixty-one thousand, three hundred thirty-nine".