1400057457 has 32 divisors (see below), whose sum is σ = 2002423680. Its totient is φ = 867041280.

The previous prime is 1400057441. The next prime is 1400057501. The reversal of 1400057457 is 7547500041.

It is not a de Polignac number, because 1400057457 - 2⁴ = 1400057441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1400057257) 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 31 ways as a sum of consecutive naturals, for example, 2183857 + ... + 2184497.

It is an arithmetic number, because the mean of its divisors is an integer number (62575740).

Almost surely, 2^1400057457 is an apocalyptic number.

1400057457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1400057457 is a deficient number, since it is larger than the sum of its proper divisors (602366223).

1400057457 is a wasteful number, since it uses less digits than its factorization.

1400057457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 1400057457 is about 37417.3416613206. The cubic root of 1400057457 is about 1118.7042458031.

Adding to 1400057457 its reverse (7547500041), we get a palindrome (8947557498).

The spelling of 1400057457 in words is "one billion, four hundred million, fifty-seven thousand, four hundred fifty-seven".