3909912390 has 64 divisors (see below), whose sum is σ = 10436760000. Its totient is φ = 1041610752.

The previous prime is 3909912389. The next prime is 3909912403. The reversal of 3909912390 is 932199093.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288486 + ... + 301734.

It is an arithmetic number, because the mean of its divisors is an integer number (163074375).

Almost surely, 2^3909912390 is an apocalyptic number.

3909912390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3909912390 is an abundant number, since it is smaller than the sum of its proper divisors (6526847610).

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

3909912390 is a wasteful number, since it uses less digits than its factorization.

3909912390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14358 (or 14352 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 3909912390 is about 62529.2922557100. The cubic root of 3909912390 is about 1575.3933529999.

The spelling of 3909912390 in words is "three billion, nine hundred nine million, nine hundred twelve thousand, three hundred ninety".