454378791 has 32 divisors (see below), whose sum is σ = 630408960. Its totient is φ = 290974464.

The previous prime is 454378789. The next prime is 454378801. The reversal of 454378791 is 197873454.

It is a happy number.

It is not a de Polignac number, because 454378791 - 2¹ = 454378789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 454378791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454378591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2538340 + ... + 2538518.

It is an arithmetic number, because the mean of its divisors is an integer number (19700280).

Almost surely, 2^454378791 is an apocalyptic number.

454378791 is a deficient number, since it is larger than the sum of its proper divisors (176030169).

454378791 is a wasteful number, since it uses less digits than its factorization.

454378791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495.

The product of its digits is 846720, while the sum is 48.

The square root of 454378791 is about 21316.1626706122. The cubic root of 454378791 is about 768.7869757613.

The spelling of 454378791 in words is "four hundred fifty-four million, three hundred seventy-eight thousand, seven hundred ninety-one".