3970487782 has 4 divisors (see below), whose sum is σ = 5955731676. Its totient is φ = 1985243890.

The previous prime is 3970487753. The next prime is 3970487783. The reversal of 3970487782 is 2877840793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2877840793 = 11257 ⋅255649.

It is a super-2 number, since 2×3970487782² = 31529546454022559048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3970487783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992621944 + ... + 992621947.

It is an arithmetic number, because the mean of its divisors is an integer number (1488932919).

Almost surely, 2^3970487782 is an apocalyptic number.

3970487782 is a deficient number, since it is larger than the sum of its proper divisors (1985243894).

3970487782 is a wasteful number, since it uses less digits than its factorization.

3970487782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985243893.

The product of its (nonzero) digits is 4741632, while the sum is 55.

The square root of 3970487782 is about 63011.8066873185. The cubic root of 3970487782 is about 1583.4874340085.

The spelling of 3970487782 in words is "three billion, nine hundred seventy million, four hundred eighty-seven thousand, seven hundred eighty-two".