986149440 has 84 divisors (see below), whose sum is σ = 3391953084. Its totient is φ = 262972416.

The previous prime is 986149421. The next prime is 986149469. The reversal of 986149440 is 44941689.

It can be written as a sum of positive squares in 2 ways, for example, as 531948096 + 454201344 = 23064^2 + 21312^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168327 + ... + 174086.

Almost surely, 2^986149440 is an apocalyptic number.

986149440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

986149440 is an abundant number, since it is smaller than the sum of its proper divisors (2405803644).

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

986149440 is a wasteful number, since it uses less digits than its factorization.

986149440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342436 (or 342423 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 986149440 is about 31403.0164156248. The cubic root of 986149440 is about 995.3616657856.

It can be divided in two parts, 986 and 149440, that added together give a triangular number (150426 = T₅₄₈).

The spelling of 986149440 in words is "nine hundred eighty-six million, one hundred forty-nine thousand, four hundred forty".