1400403040 has 96 divisors (see below), whose sum is σ = 3449083680. Its totient is φ = 536653824.

The previous prime is 1400403031. The next prime is 1400403061. The reversal of 1400403040 is 403040041.

It is a super-2 number, since 2×1400403040² = 3922257348882483200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634579 + ... + 636781.

It is an arithmetic number, because the mean of its divisors is an integer number (35927955).

Almost surely, 2^1400403040 is an apocalyptic number.

1400403040 is a gapful number since it is divisible by the number (10) 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 1400403040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724541840).

1400403040 is an abundant number, since it is smaller than the sum of its proper divisors (2048680640).

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

1400403040 is a wasteful number, since it uses less digits than its factorization.

1400403040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1400403040 is about 37421.9593287150. The cubic root of 1400403040 is about 1118.7962833031.

Adding to 1400403040 its reverse (403040041), we get a palindrome (1803443081).

The spelling of 1400403040 in words is "one billion, four hundred million, four hundred three thousand, forty".