147091977 has 24 divisors (see below), whose sum is σ = 230002080. Its totient is φ = 92894040.

The previous prime is 147091963. The next prime is 147091981. The reversal of 147091977 is 779190741.

147091977 is a `hidden beast` number, since 1 + 470 + 91 + 97 + 7 = 666.

It is not a de Polignac number, because 147091977 - 2⁴ = 147091961 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (147091577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2202 + ... + 17292.

It is an arithmetic number, because the mean of its divisors is an integer number (9583420).

Almost surely, 2^147091977 is an apocalyptic number.

It is an amenable number.

147091977 is a deficient number, since it is larger than the sum of its proper divisors (82910103).

147091977 is a wasteful number, since it uses less digits than its factorization.

147091977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15138 (or 15113 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 45.

The square root of 147091977 is about 12128.1481273936. The cubic root of 147091977 is about 527.8732585773.

The spelling of 147091977 in words is "one hundred forty-seven million, ninety-one thousand, nine hundred seventy-seven".