153982397 has 2 divisors, whose sum is σ = 153982398. Its totient is φ = 153982396.

The previous prime is 153982357. The next prime is 153982399. The reversal of 153982397 is 793289351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114468601 + 39513796 = 10699^2 + 6286^2 .

It is an emirp because it is prime and its reverse (793289351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 153982397 - 2¹⁸ = 153720253 is a prime.

It is a super-5 number, since 5×153982397⁵ (a number of 42 digits) contains 55555 as substring.

Together with 153982399, 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 (153982399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76991198 + 76991199.

It is an arithmetic number, because the mean of its divisors is an integer number (76991199).

Almost surely, 2^153982397 is an apocalyptic number.

It is an amenable number.

153982397 is a deficient number, since it is larger than the sum of its proper divisors (1).

153982397 is an equidigital number, since it uses as much as digits as its factorization.

153982397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 153982397 is about 12408.9643806403. The cubic root of 153982397 is about 535.9904173771.

The spelling of 153982397 in words is "one hundred fifty-three million, nine hundred eighty-two thousand, three hundred ninety-seven".