998749420 has 12 divisors (see below), whose sum is σ = 2097373824. Its totient is φ = 399499760.

The previous prime is 998749417. The next prime is 998749429. The reversal of 998749420 is 24947899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (998749429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24968716 + ... + 24968755.

It is an arithmetic number, because the mean of its divisors is an integer number (174781152).

Almost surely, 2^998749420 is an apocalyptic number.

It is an amenable number.

998749420 is an abundant number, since it is smaller than the sum of its proper divisors (1098624404).

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

998749420 is a wasteful number, since it uses less digits than its factorization.

998749420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49937480 (or 49937478 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 998749420 is about 31602.9970097774. The cubic root of 998749420 is about 999.5829661069.

The spelling of 998749420 in words is "nine hundred ninety-eight million, seven hundred forty-nine thousand, four hundred twenty".