3901439990 has 32 divisors (see below), whose sum is σ = 8497929024. Its totient is φ = 1258951680.

The previous prime is 3901439963. The next prime is 3901440029. The reversal of 3901439990 is 999341093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1638071 + ... + 1640450.

It is an arithmetic number, because the mean of its divisors is an integer number (265560282).

Almost surely, 2^3901439990 is an apocalyptic number.

3901439990 is an abundant number, since it is smaller than the sum of its proper divisors (4596489034).

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

3901439990 is a wasteful number, since it uses less digits than its factorization.

3901439990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278552.

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 3901439990 is about 62461.5080669687. The cubic root of 3901439990 is about 1574.2546220219.

The spelling of 3901439990 in words is "three billion, nine hundred one million, four hundred thirty-nine thousand, nine hundred ninety".