149081947 has 8 divisors (see below), whose sum is σ = 170495456. Its totient is φ = 127697472.

The previous prime is 149081941. The next prime is 149081969. The reversal of 149081947 is 749180941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149081947 - 2²³ = 140693339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149081941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5173 + ... + 18025.

It is an arithmetic number, because the mean of its divisors is an integer number (21311932).

Almost surely, 2^149081947 is an apocalyptic number.

149081947 is a deficient number, since it is larger than the sum of its proper divisors (21413509).

149081947 is a wasteful number, since it uses less digits than its factorization.

149081947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14517.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 149081947 is about 12209.9118342435. The cubic root of 149081947 is about 530.2430912865.

The spelling of 149081947 in words is "one hundred forty-nine million, eighty-one thousand, nine hundred forty-seven".