147823997 has 2 divisors, whose sum is σ = 147823998. Its totient is φ = 147823996.

The previous prime is 147823987. The next prime is 147823999. The reversal of 147823997 is 799328741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78251716 + 69572281 = 8846^2 + 8341^2 .

It is a cyclic number.

It is not a de Polignac number, because 147823997 - 2¹⁴ = 147807613 is a prime.

Together with 147823999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147823999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73911998 + 73911999.

It is an arithmetic number, because the mean of its divisors is an integer number (73911999).

Almost surely, 2^147823997 is an apocalyptic number.

It is an amenable number.

147823997 is a deficient number, since it is larger than the sum of its proper divisors (1).

147823997 is an equidigital number, since it uses as much as digits as its factorization.

147823997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 147823997 is about 12158.2892299863. The cubic root of 147823997 is about 528.7474837758.

The spelling of 147823997 in words is "one hundred forty-seven million, eight hundred twenty-three thousand, nine hundred ninety-seven".