149225693 has 4 divisors (see below), whose sum is σ = 149355168. Its totient is φ = 149096220.

The previous prime is 149225669. The next prime is 149225701. The reversal of 149225693 is 396522941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 396522941 = 13441 ⋅29501.

It is a cyclic number.

It is not a de Polignac number, because 149225693 - 2¹⁴ = 149209309 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 149225693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149225603) 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, 62993 + ... + 65318.

It is an arithmetic number, because the mean of its divisors is an integer number (37338792).

Almost surely, 2^149225693 is an apocalyptic number.

It is an amenable number.

149225693 is a deficient number, since it is larger than the sum of its proper divisors (129475).

149225693 is a wasteful number, since it uses less digits than its factorization.

149225693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129474.

The product of its digits is 116640, while the sum is 41.

The square root of 149225693 is about 12215.7968630786. The cubic root of 149225693 is about 530.4134580784.

The spelling of 149225693 in words is "one hundred forty-nine million, two hundred twenty-five thousand, six hundred ninety-three".