1399036464 has 180 divisors, whose sum is σ = 4561450608. Its totient is φ = 392117760.

The previous prime is 1399036439. The next prime is 1399036477. The reversal of 1399036464 is 4646309931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3750582 + ... + 3750954.

Almost surely, 2^1399036464 is an apocalyptic number.

1399036464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1399036464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2280725304).

1399036464 is an abundant number, since it is smaller than the sum of its proper divisors (3162414144).

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

1399036464 is a wasteful number, since it uses less digits than its factorization.

1399036464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 1399036464 is about 37403.6958601687. The cubic root of 1399036464 is about 1118.4322410226.

The spelling of 1399036464 in words is "one billion, three hundred ninety-nine million, thirty-six thousand, four hundred sixty-four".