369999920 has 40 divisors (see below), whose sum is σ = 905529840. Its totient is φ = 140209920.

The previous prime is 369999899. The next prime is 369999923. The reversal of 369999920 is 29999963.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (369999923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120191 + ... + 123230.

It is an arithmetic number, because the mean of its divisors is an integer number (22638246).

Almost surely, 2^369999920 is an apocalyptic number.

It is an amenable number.

369999920 is an abundant number, since it is smaller than the sum of its proper divisors (535529920).

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

369999920 is a wasteful number, since it uses less digits than its factorization.

369999920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243453 (or 243447 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 56.

The square root of 369999920 is about 19235.3819821703. The cubic root of 369999920 is about 717.9053834659.

The spelling of 369999920 in words is "three hundred sixty-nine million, nine hundred ninety-nine thousand, nine hundred twenty".