3903949386 has 20 divisors (see below), whose sum is σ = 8747738802. Its totient is φ = 1301316408.

The previous prime is 3903949369. The next prime is 3903949409. The reversal of 3903949386 is 6839493093.

It is a happy number.

3903949386 is a `hidden beast` number, since 3 + 90 + 394 + 93 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3645865161 + 258084225 = 60381^2 + 16065^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12049065 + ... + 12049388.

Almost surely, 2^3903949386 is an apocalyptic number.

3903949386 is an abundant number, since it is smaller than the sum of its proper divisors (4843789416).

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

3903949386 is a wasteful number, since it uses less digits than its factorization.

3903949386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24098467 (or 24098458 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The square root of 3903949386 is about 62481.5923772754. The cubic root of 3903949386 is about 1574.5920685028.

The spelling of 3903949386 in words is "three billion, nine hundred three million, nine hundred forty-nine thousand, three hundred eighty-six".