40407370 has 8 divisors (see below), whose sum is σ = 72733284. Its totient is φ = 16162944.

The previous prime is 40407349. The next prime is 40407371. The reversal of 40407370 is 7370404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39652209 + 755161 = 6297^2 + 869^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40407371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020359 + ... + 2020378.

Almost surely, 2^40407370 is an apocalyptic number.

40407370 is a deficient number, since it is larger than the sum of its proper divisors (32325914).

40407370 is a wasteful number, since it uses less digits than its factorization.

40407370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040744.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 40407370 is about 6356.6791644694. The cubic root of 40407370 is about 343.1522583888.

Adding to 40407370 its reverse (7370404), we get a palindrome (47777774).

The spelling of 40407370 in words is "forty million, four hundred seven thousand, three hundred seventy".