147890997 has 12 divisors (see below), whose sum is σ = 214087744. Its totient is φ = 98378280.

The previous prime is 147890969. The next prime is 147891001. The reversal of 147890997 is 799098741.

It is not a de Polignac number, because 147890997 - 2¹² = 147886901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147890947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13579 + ... + 21912.

Almost surely, 2^147890997 is an apocalyptic number.

It is an amenable number.

147890997 is a deficient number, since it is larger than the sum of its proper divisors (66196747).

147890997 is a wasteful number, since it uses less digits than its factorization.

147890997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35960 (or 35957 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 147890997 is about 12161.0442397024. The cubic root of 147890997 is about 528.8273551798.

The spelling of 147890997 in words is "one hundred forty-seven million, eight hundred ninety thousand, nine hundred ninety-seven".