451420919 has 2 divisors, whose sum is σ = 451420920. Its totient is φ = 451420918.

The previous prime is 451420889. The next prime is 451420939. The reversal of 451420919 is 919024154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451420919 - 2¹⁶ = 451355383 is a prime.

It is a super-2 number, since 2×451420919² = 407561692221609122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451420939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225710459 + 225710460.

It is an arithmetic number, because the mean of its divisors is an integer number (225710460).

Almost surely, 2^451420919 is an apocalyptic number.

451420919 is a deficient number, since it is larger than the sum of its proper divisors (1).

451420919 is an equidigital number, since it uses as much as digits as its factorization.

451420919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 451420919 is about 21246.6684211902. The cubic root of 451420919 is about 767.1151505966.

The spelling of 451420919 in words is "four hundred fifty-one million, four hundred twenty thousand, nine hundred nineteen".