149842393 has 8 divisors (see below), whose sum is σ = 151081416. Its totient is φ = 148608000.

The previous prime is 149842367. The next prime is 149842421. The reversal of 149842393 is 393248941.

It can be written as a sum of positive squares in 4 ways, for example, as 98962704 + 50879689 = 9948^2 + 7133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149842393 - 2¹⁷ = 149711321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149842993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92793 + ... + 94393.

It is an arithmetic number, because the mean of its divisors is an integer number (18885177).

Almost surely, 2^149842393 is an apocalyptic number.

It is an amenable number.

149842393 is a deficient number, since it is larger than the sum of its proper divisors (1239023).

149842393 is a wasteful number, since it uses less digits than its factorization.

149842393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its digits is 186624, while the sum is 43.

The square root of 149842393 is about 12241.0127440502. The cubic root of 149842393 is about 531.1431277890.

The spelling of 149842393 in words is "one hundred forty-nine million, eight hundred forty-two thousand, three hundred ninety-three".