149893 has 2 divisors, whose sum is σ = 149894. Its totient is φ = 149892.

The previous prime is 149873. The next prime is 149899. The reversal of 149893 is 398941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 3969 = 382^2 + 63^2 .

It is an emirp because it is prime and its reverse (398941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149893 - 2⁵ = 149861 is a prime.

It is a super-2 number, since 2×149893² = 44935822898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74946 + 74947.

It is an arithmetic number, because the mean of its divisors is an integer number (74947).

2¹⁴⁹⁸⁹³ is an apocalyptic number.

It is an amenable number.

149893 is a deficient number, since it is larger than the sum of its proper divisors (1).

149893 is an equidigital number, since it uses as much as digits as its factorization.

149893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 149893 is about 387.1601735716. The cubic root of 149893 is about 53.1202916242.

It can be divided in two parts, 1 and 49893, that added together give a palindrome (49894).

The spelling of 149893 in words is "one hundred forty-nine thousand, eight hundred ninety-three".