147989457 has 48 divisors (see below), whose sum is σ = 278251200. Its totient is φ = 76870080.

The previous prime is 147989449. The next prime is 147989509. The reversal of 147989457 is 754989741.

It is not a de Polignac number, because 147989457 - 2³ = 147989449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147989057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9469 + ... + 19637.

It is an arithmetic number, because the mean of its divisors is an integer number (5796900).

Almost surely, 2^147989457 is an apocalyptic number.

It is an amenable number.

147989457 is a deficient number, since it is larger than the sum of its proper divisors (130261743).

147989457 is a wasteful number, since it uses less digits than its factorization.

147989457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10203 (or 10190 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 147989457 is about 12165.0917382484. The cubic root of 147989457 is about 528.9446866192.

The spelling of 147989457 in words is "one hundred forty-seven million, nine hundred eighty-nine thousand, four hundred fifty-seven".