869449420 has 24 divisors (see below), whose sum is σ = 2086678944. Its totient is φ = 298096896.

The previous prime is 869449417. The next prime is 869449423. The reversal of 869449420 is 24944968.

It is an interprime number because it is at equal distance from previous prime (869449417) and next prime (869449423).

It is not an unprimeable number, because it can be changed into a prime (869449423) 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, 3105037 + ... + 3105316.

It is an arithmetic number, because the mean of its divisors is an integer number (86944956).

Almost surely, 2^869449420 is an apocalyptic number.

It is an amenable number.

869449420 is an abundant number, since it is smaller than the sum of its proper divisors (1217229524).

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

869449420 is a wasteful number, since it uses less digits than its factorization.

869449420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210369 (or 6210367 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 869449420 is about 29486.4277253112. The cubic root of 869449420 is about 954.4388468916.

The spelling of 869449420 in words is "eight hundred sixty-nine million, four hundred forty-nine thousand, four hundred twenty".