40007950 has 12 divisors (see below), whose sum is σ = 74414880. Its totient is φ = 16003160.

The previous prime is 40007917. The next prime is 40007963. The reversal of 40007950 is 5970004.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400030 + ... + 400129.

It is an arithmetic number, because the mean of its divisors is an integer number (6201240).

Almost surely, 2^40007950 is an apocalyptic number.

40007950 is a deficient number, since it is larger than the sum of its proper divisors (34406930).

40007950 is a wasteful number, since it uses less digits than its factorization.

40007950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800171 (or 800166 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 40007950 is about 6325.1837917961. The cubic root of 40007950 is about 342.0178450158.

Adding to 40007950 its reverse (5970004), we get a palindrome (45977954).

The spelling of 40007950 in words is "forty million, seven thousand, nine hundred fifty".