1400156087 has 4 divisors (see below), whose sum is σ = 1527443016. Its totient is φ = 1272869160.

The previous prime is 1400156071. The next prime is 1400156111. The reversal of 1400156087 is 7806510041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1400156087 - 2⁴ = 1400156071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400156587) 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, 63643448 + ... + 63643469.

It is an arithmetic number, because the mean of its divisors is an integer number (381860754).

Almost surely, 2^1400156087 is an apocalyptic number.

1400156087 is a deficient number, since it is larger than the sum of its proper divisors (127286929).

1400156087 is a wasteful number, since it uses less digits than its factorization.

1400156087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127286928.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1400156087 is about 37418.6596098791. The cubic root of 1400156087 is about 1118.7305150128.

The spelling of 1400156087 in words is "one billion, four hundred million, one hundred fifty-six thousand, eighty-seven".