3942544440 has 64 divisors (see below), whose sum is σ = 12102710400. Its totient is φ = 1026893952.

The previous prime is 3942544427. The next prime is 3942544453. The reversal of 3942544440 is 444452493.

It is an interprime number because it is at equal distance from previous prime (3942544427) and next prime (3942544453).

It is a super-2 number, since 2×3942544440² = 31087313322749827200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376870 + ... + 387189.

It is an arithmetic number, because the mean of its divisors is an integer number (189104850).

Almost surely, 2^3942544440 is an apocalyptic number.

3942544440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3942544440 is an abundant number, since it is smaller than the sum of its proper divisors (8160165960).

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

3942544440 is a wasteful number, since it uses less digits than its factorization.

3942544440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764116 (or 764112 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

The square root of 3942544440 is about 62789.6841845856. The cubic root of 3942544440 is about 1579.7639502087.

The spelling of 3942544440 in words is "three billion, nine hundred forty-two million, five hundred forty-four thousand, four hundred forty".