426073987 has 8 divisors (see below), whose sum is σ = 433626480. Its totient is φ = 418532640.

The previous prime is 426073961. The next prime is 426074021. The reversal of 426073987 is 789370624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426073987 - 2¹⁵ = 426041219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426073957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124633 + ... + 128005.

It is an arithmetic number, because the mean of its divisors is an integer number (54203310).

Almost surely, 2^426073987 is an apocalyptic number.

426073987 is a deficient number, since it is larger than the sum of its proper divisors (7552493).

426073987 is a wasteful number, since it uses less digits than its factorization.

426073987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 426073987 is about 20641.5597036658. The cubic root of 426073987 is about 752.4800785004.

The spelling of 426073987 in words is "four hundred twenty-six million, seventy-three thousand, nine hundred eighty-seven".