450421887 has 16 divisors (see below), whose sum is σ = 606228480. Its totient is φ = 297458112.

The previous prime is 450421877. The next prime is 450421891. The reversal of 450421887 is 788124054.

It is a happy number.

It is not a de Polignac number, because 450421887 - 2¹² = 450417791 is a prime.

It is a super-3 number, since 3×450421887³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450421837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270018 + ... + 271680.

It is an arithmetic number, because the mean of its divisors is an integer number (37889280).

Almost surely, 2^450421887 is an apocalyptic number.

450421887 is a deficient number, since it is larger than the sum of its proper divisors (155806593).

450421887 is a wasteful number, since it uses less digits than its factorization.

450421887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 450421887 is about 21223.1450779568. The cubic root of 450421887 is about 766.5488361026.

The spelling of 450421887 in words is "four hundred fifty million, four hundred twenty-one thousand, eight hundred eighty-seven".