1021400984 has 16 divisors (see below), whose sum is σ = 1966887600. Its totient is φ = 496897632.

The previous prime is 1021400971. The next prime is 1021401037. The reversal of 1021400984 is 4890041201.

It is a super-3 number, since 3×1021400984³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1725044 + ... + 1725635.

It is an arithmetic number, because the mean of its divisors is an integer number (122930475).

Almost surely, 2^1021400984 is an apocalyptic number.

It is an amenable number.

1021400984 is a deficient number, since it is larger than the sum of its proper divisors (945486616).

1021400984 is a wasteful number, since it uses less digits than its factorization.

1021400984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450722 (or 3450718 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1021400984 is about 31959.3645744092. The cubic root of 1021400984 is about 1007.0833687532.

The spelling of 1021400984 in words is "one billion, twenty-one million, four hundred thousand, nine hundred eighty-four".