399881102 has 4 divisors (see below), whose sum is σ = 599821656. Its totient is φ = 199940550.

The previous prime is 399881101. The next prime is 399881113. The reversal of 399881102 is 201188993.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 399881102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399881101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99970274 + ... + 99970277.

It is an arithmetic number, because the mean of its divisors is an integer number (149955414).

Almost surely, 2^399881102 is an apocalyptic number.

399881102 is a deficient number, since it is larger than the sum of its proper divisors (199940554).

399881102 is a wasteful number, since it uses less digits than its factorization.

399881102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199940553.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 399881102 is about 19997.0273290807. The cubic root of 399881102 is about 736.7332884973.

The spelling of 399881102 in words is "three hundred ninety-nine million, eight hundred eighty-one thousand, one hundred two".