1400680440 has 96 divisors (see below), whose sum is σ = 4699094400. Its totient is φ = 361463040.

The previous prime is 1400680433. The next prime is 1400680447. The reversal of 1400680440 is 440860041.

1400680440 is a `hidden beast` number, since 140 + 0 + 6 + 80 + 440 = 666.

It is an interprime number because it is at equal distance from previous prime (1400680433) and next prime (1400680447).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400680447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51595 + ... + 73914.

It is an arithmetic number, because the mean of its divisors is an integer number (48948900).

Almost surely, 2^1400680440 is an apocalyptic number.

1400680440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400680440 is an abundant number, since it is smaller than the sum of its proper divisors (3298413960).

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

1400680440 is a wasteful number, since it uses less digits than its factorization.

1400680440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125557 (or 125550 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 1400680440 is about 37425.6655251446. The cubic root of 1400680440 is about 1118.8701509898.

The spelling of 1400680440 in words is "one billion, four hundred million, six hundred eighty thousand, four hundred forty".