40490293284 has 135 divisors (see below), whose sum is σ = 123208345953. Its totient is φ = 11561411232.

The previous prime is 40490293279. The next prime is 40490293307. The reversal of 40490293284 is 48239209404.

It is a happy number.

The square root of 40490293284 is 201222.

It is a perfect power (a square), and thus also a powerful number.

40490293284 is a `hidden beast` number, since 40 + 49 + 0 + 293 + 284 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8116208100 + 32374085184 = 90090^2 + 179928^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 25353174 + ... + 25354770.

Almost surely, 2^40490293284 is an apocalyptic number.

40490293284 is the 201222-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40490293284

40490293284 is an abundant number, since it is smaller than the sum of its proper divisors (82718052669).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40490293284 is an equidigital number, since it uses as much as digits as its factorization.

40490293284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 40490293284 in words is "forty billion, four hundred ninety million, two hundred ninety-three thousand, two hundred eighty-four".