149748497 has 4 divisors (see below), whose sum is σ = 149982756. Its totient is φ = 149514240.

The previous prime is 149748493. The next prime is 149748499. The reversal of 149748497 is 794847941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794847941 = 59 ⋅13471999.

It can be written as a sum of positive squares in 2 ways, for example, as 106832896 + 42915601 = 10336^2 + 6551^2 .

It is a cyclic number.

It is not a de Polignac number, because 149748497 - 2² = 149748493 is a prime.

It is a super-2 number, since 2×149748497² = 44849224707518018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149748493) 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, 116168 + ... + 117449.

It is an arithmetic number, because the mean of its divisors is an integer number (37495689).

Almost surely, 2^149748497 is an apocalyptic number.

It is an amenable number.

149748497 is a deficient number, since it is larger than the sum of its proper divisors (234259).

149748497 is an equidigital number, since it uses as much as digits as its factorization.

149748497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234258.

The product of its digits is 2032128, while the sum is 53.

The square root of 149748497 is about 12237.1768394512. The cubic root of 149748497 is about 531.0321608926.

It can be divided in two parts, 1497 and 48497, that added together give a palindrome (49994).

The spelling of 149748497 in words is "one hundred forty-nine million, seven hundred forty-eight thousand, four hundred ninety-seven".