40771390 has 32 divisors (see below), whose sum is σ = 82827360. Its totient is φ = 14313600.

The previous prime is 40771351. The next prime is 40771391. The reversal of 40771390 is 9317704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40771391) 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, 3201 + ... + 9580.

It is an arithmetic number, because the mean of its divisors is an integer number (2588355).

Almost surely, 2^40771390 is an apocalyptic number.

40771390 is an abundant number, since it is smaller than the sum of its proper divisors (42055970).

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

40771390 is a wasteful number, since it uses less digits than its factorization.

40771390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12828.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 40771390 is about 6385.2478417051. The cubic root of 40771390 is about 344.1796373378.

The spelling of 40771390 in words is "forty million, seven hundred seventy-one thousand, three hundred ninety".