149773454 has 4 divisors (see below), whose sum is σ = 224660184. Its totient is φ = 74886726.

The previous prime is 149773453. The next prime is 149773471. The reversal of 149773454 is 454377941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149773453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37443362 + ... + 37443365.

It is an arithmetic number, because the mean of its divisors is an integer number (56165046).

Almost surely, 2^149773454 is an apocalyptic number.

149773454 is a deficient number, since it is larger than the sum of its proper divisors (74886730).

149773454 is an equidigital number, since it uses as much as digits as its factorization.

149773454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74886729.

The product of its digits is 423360, while the sum is 44.

The square root of 149773454 is about 12238.1965174612. The cubic root of 149773454 is about 531.0616597606.

The spelling of 149773454 in words is "one hundred forty-nine million, seven hundred seventy-three thousand, four hundred fifty-four".