1400454438 has 16 divisors (see below), whose sum is σ = 2812631040. Its totient is φ = 464864456.

The previous prime is 1400454431. The next prime is 1400454439. The reversal of 1400454438 is 8344540041.

It is a super-2 number, since 2×1400454438² = 3922545265827791688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1400454399 and 1400454408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400454431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486870 + ... + 489737.

It is an arithmetic number, because the mean of its divisors is an integer number (175789440).

Almost surely, 2^1400454438 is an apocalyptic number.

1400454438 is an abundant number, since it is smaller than the sum of its proper divisors (1412176602).

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

1400454438 is a wasteful number, since it uses less digits than its factorization.

1400454438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976851.

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 1400454438 is about 37422.6460582359. The cubic root of 1400454438 is about 1118.8099705979.

Adding to 1400454438 its reverse (8344540041), we get a palindrome (9744994479).

The spelling of 1400454438 in words is "one billion, four hundred million, four hundred fifty-four thousand, four hundred thirty-eight".