149380493 has 4 divisors (see below), whose sum is σ = 149438268. Its totient is φ = 149322720.

The previous prime is 149380487. The next prime is 149380499. The reversal of 149380493 is 394083941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394083941 = 109 ⋅3615449.

It is an interprime number because it is at equal distance from previous prime (149380487) and next prime (149380499).

It can be written as a sum of positive squares in 2 ways, for example, as 118766404 + 30614089 = 10898^2 + 5533^2 .

It is a cyclic number.

It is not a de Polignac number, because 149380493 - 2⁴ = 149380477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149380493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149380499) 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, 24818 + ... + 30243.

It is an arithmetic number, because the mean of its divisors is an integer number (37359567).

Almost surely, 2^149380493 is an apocalyptic number.

It is an amenable number.

149380493 is a deficient number, since it is larger than the sum of its proper divisors (57775).

149380493 is an equidigital number, since it uses as much as digits as its factorization.

149380493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57774.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 149380493 is about 12222.1312789546. The cubic root of 149380493 is about 530.5968036902.

The spelling of 149380493 in words is "one hundred forty-nine million, three hundred eighty thousand, four hundred ninety-three".