445401487 has 2 divisors, whose sum is σ = 445401488. Its totient is φ = 445401486.

The previous prime is 445401431. The next prime is 445401493. The reversal of 445401487 is 784104544.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445401487 is a prime.

It is a super-2 number, since 2×445401487² = 396764969243622338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445401497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222700743 + 222700744.

It is an arithmetic number, because the mean of its divisors is an integer number (222700744).

Almost surely, 2^445401487 is an apocalyptic number.

445401487 is a deficient number, since it is larger than the sum of its proper divisors (1).

445401487 is an equidigital number, since it uses as much as digits as its factorization.

445401487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71680, while the sum is 37.

The square root of 445401487 is about 21104.5371188283. The cubic root of 445401487 is about 763.6902057811.

The spelling of 445401487 in words is "four hundred forty-five million, four hundred one thousand, four hundred eighty-seven".