3957240038 has 4 divisors (see below), whose sum is σ = 5935860060. Its totient is φ = 1978620018.

The previous prime is 3957240031. The next prime is 3957240041. The reversal of 3957240038 is 8300427593.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 3957239977 and 3957240004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957240031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989310008 + ... + 989310011.

It is an arithmetic number, because the mean of its divisors is an integer number (1483965015).

Almost surely, 2^3957240038 is an apocalyptic number.

3957240038 is a deficient number, since it is larger than the sum of its proper divisors (1978620022).

3957240038 is a wasteful number, since it uses less digits than its factorization.

3957240038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978620021.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 3957240038 is about 62906.5977302858. The cubic root of 3957240038 is about 1581.7243416086.

The spelling of 3957240038 in words is "three billion, nine hundred fifty-seven million, two hundred forty thousand, thirty-eight".