149749953 has 4 divisors (see below), whose sum is σ = 199666608. Its totient is φ = 99833300.

The previous prime is 149749927. The next prime is 149749969. The reversal of 149749953 is 359947941.

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.

It is a cyclic number.

It is not a de Polignac number, because 149749953 - 2⁹ = 149749441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149749896 and 149749905.

It is not an unprimeable number, because it can be changed into a prime (149749913) 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, 24958323 + ... + 24958328.

It is an arithmetic number, because the mean of its divisors is an integer number (49916652).

Almost surely, 2^149749953 is an apocalyptic number.

It is an amenable number.

149749953 is a deficient number, since it is larger than the sum of its proper divisors (49916655).

149749953 is an equidigital number, since it uses as much as digits as its factorization.

149749953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49916654.

The product of its digits is 1224720, while the sum is 51.

The square root of 149749953 is about 12237.2363301523. The cubic root of 149749953 is about 531.0338819567.

The spelling of 149749953 in words is "one hundred forty-nine million, seven hundred forty-nine thousand, nine hundred fifty-three".