3990739854 has 8 divisors (see below), whose sum is σ = 7981479720. Its totient is φ = 1330246616.

The previous prime is 3990739843. The next prime is 3990739877. The reversal of 3990739854 is 4589370993.

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

3990739854 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 3990739794 and 3990739803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332561649 + ... + 332561660.

It is an arithmetic number, because the mean of its divisors is an integer number (997684965).

Almost surely, 2^3990739854 is an apocalyptic number.

3990739854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3990739854 is a wasteful number, since it uses less digits than its factorization.

3990739854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665123314.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The square root of 3990739854 is about 63172.3029024588. The cubic root of 3990739854 is about 1586.1751416801.

The spelling of 3990739854 in words is "three billion, nine hundred ninety million, seven hundred thirty-nine thousand, eight hundred fifty-four".