402050072889 has 12 divisors (see below), whose sum is σ = 581159532772. Its totient is φ = 267839287200.

The previous prime is 402050072887. The next prime is 402050072923. The reversal of 402050072889 is 988270050204.

402050072889 is a `hidden beast` number, since 40 + 2 + 0 + 500 + 7 + 28 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 174292055289 + 227758017600 = 417483^2 + 477240^2 .

It is not a de Polignac number, because 402050072889 - 2¹ = 402050072887 is a prime.

It is a super-2 number, since 2×402050072889² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402050072881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16161442 + ... + 16186299.

Almost surely, 2^402050072889 is an apocalyptic number.

It is an amenable number.

402050072889 is a deficient number, since it is larger than the sum of its proper divisors (179109459883).

402050072889 is a wasteful number, since it uses less digits than its factorization.

402050072889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32349128 (or 32349125 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 402050072889 in words is "four hundred two billion, fifty million, seventy-two thousand, eight hundred eighty-nine".