454142993 has 2 divisors, whose sum is σ = 454142994. Its totient is φ = 454142992.

The previous prime is 454142971. The next prime is 454143031. The reversal of 454142993 is 399241454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257666704 + 196476289 = 16052^2 + 14017^2 .

It is a cyclic number.

It is not a de Polignac number, because 454142993 - 2¹² = 454138897 is a prime.

It is a super-3 number, since 3×454142993³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 454142993.

It is not a weakly prime, because it can be changed into another prime (454142093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227071496 + 227071497.

It is an arithmetic number, because the mean of its divisors is an integer number (227071497).

Almost surely, 2^454142993 is an apocalyptic number.

It is an amenable number.

454142993 is a deficient number, since it is larger than the sum of its proper divisors (1).

454142993 is an equidigital number, since it uses as much as digits as its factorization.

454142993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 454142993 is about 21310.6309854964. The cubic root of 454142993 is about 768.6539664734.

The spelling of 454142993 in words is "four hundred fifty-four million, one hundred forty-two thousand, nine hundred ninety-three".