149964749 has 4 divisors (see below), whose sum is σ = 163597920. Its totient is φ = 136331580.

The previous prime is 149964743. The next prime is 149964767. The reversal of 149964749 is 947469941.

149964749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 149964749 - 2¹⁶ = 149899213 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 149964749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149964743) 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, 6816569 + ... + 6816590.

It is an arithmetic number, because the mean of its divisors is an integer number (40899480).

Almost surely, 2^149964749 is an apocalyptic number.

It is an amenable number.

149964749 is a deficient number, since it is larger than the sum of its proper divisors (13633171).

149964749 is a wasteful number, since it uses less digits than its factorization.

149964749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633170.

The product of its digits is 1959552, while the sum is 53.

The square root of 149964749 is about 12246.0095133068. The cubic root of 149964749 is about 531.2876593557.

The spelling of 149964749 in words is "one hundred forty-nine million, nine hundred sixty-four thousand, seven hundred forty-nine".