1400971 has 16 divisors (see below), whose sum is σ = 1679328. Its totient is φ = 1152000.

The previous prime is 1400947. The next prime is 1400989. The reversal of 1400971 is 1790041.

It is a 10-Lehmer number, since φ(1400971) divides (1400971-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 1400971 - 2⁵ = 1400939 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1400941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13821 + ... + 13921.

It is an arithmetic number, because the mean of its divisors is an integer number (104958).

2^1400971 is an apocalyptic number.

1400971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1400971 is a deficient number, since it is larger than the sum of its proper divisors (278357).

1400971 is a wasteful number, since it uses less digits than its factorization.

1400971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1400971 is about 1183.6262078883. The cubic root of 1400971 is about 111.8947512541.

The spelling of 1400971 in words is "one million, four hundred thousand, nine hundred seventy-one".