1400340 has 24 divisors (see below), whose sum is σ = 3921120. Its totient is φ = 373408.

The previous prime is 1400327. The next prime is 1400353. The reversal of 1400340 is 430041.

It is an interprime number because it is at equal distance from previous prime (1400327) and next prime (1400353).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11610 + ... + 11729.

It is an arithmetic number, because the mean of its divisors is an integer number (163380).

2^1400340 is an apocalyptic number.

1400340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400340 is an abundant number, since it is smaller than the sum of its proper divisors (2520780).

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

1400340 is a wasteful number, since it uses less digits than its factorization.

1400340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23351 (or 23349 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1400340 is about 1183.3596241211. The cubic root of 1400340 is about 111.8779495285.

Adding to 1400340 its reverse (430041), we get a palindrome (1830381).

Subtracting from 1400340 its reverse (430041), we obtain a cube (970299 = 99³).

The spelling of 1400340 in words is "one million, four hundred thousand, three hundred forty".