1400312461 has 4 divisors (see below), whose sum is σ = 1400528800. Its totient is φ = 1400096124.

The previous prime is 1400312449. The next prime is 1400312509. The reversal of 1400312461 is 1642130041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1400312461 - 2¹⁷ = 1400181389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400312411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98151 + ... + 111508.

It is an arithmetic number, because the mean of its divisors is an integer number (350132200).

Almost surely, 2^1400312461 is an apocalyptic number.

It is an amenable number.

1400312461 is a deficient number, since it is larger than the sum of its proper divisors (216339).

1400312461 is an equidigital number, since it uses as much as digits as its factorization.

1400312461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216338.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1400312461 is about 37420.7490705357. The cubic root of 1400312461 is about 1118.7721612871.

The spelling of 1400312461 in words is "one billion, four hundred million, three hundred twelve thousand, four hundred sixty-one".