40398752 has 12 divisors (see below), whose sum is σ = 79535106. Its totient is φ = 20199360.

The previous prime is 40398751. The next prime is 40398811. The reversal of 40398752 is 25789304.

It can be written as a sum of positive squares in only one way, i.e., 40398736 + 16 = 6356^2 + 4^2 .

It is not an unprimeable number, because it can be changed into a prime (40398751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631199 + ... + 631262.

Almost surely, 2^40398752 is an apocalyptic number.

It is an amenable number.

40398752 is a deficient number, since it is larger than the sum of its proper divisors (39136354).

40398752 is a wasteful number, since it uses less digits than its factorization.

40398752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262471 (or 1262463 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 40398752 is about 6356.0012586531. The cubic root of 40398752 is about 343.1278610538.

The spelling of 40398752 in words is "forty million, three hundred ninety-eight thousand, seven hundred fifty-two".