451961879 has 2 divisors, whose sum is σ = 451961880. Its totient is φ = 451961878.

The previous prime is 451961869. The next prime is 451961929. The reversal of 451961879 is 978169154.

It is an a-pointer prime, because the next prime (451961929) can be obtained adding 451961879 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451961879 - 2¹² = 451957783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451961869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225980939 + 225980940.

It is an arithmetic number, because the mean of its divisors is an integer number (225980940).

Almost surely, 2^451961879 is an apocalyptic number.

451961879 is a deficient number, since it is larger than the sum of its proper divisors (1).

451961879 is an equidigital number, since it uses as much as digits as its factorization.

451961879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 50.

The square root of 451961879 is about 21259.3950760599. The cubic root of 451961879 is about 767.4214522776.

The spelling of 451961879 in words is "four hundred fifty-one million, nine hundred sixty-one thousand, eight hundred seventy-nine".