1400872487 has 8 divisors (see below), whose sum is σ = 1609843872. Its totient is φ = 1194112800.

The previous prime is 1400872481. The next prime is 1400872493. The reversal of 1400872487 is 7842780041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1400872481) and next prime (1400872493).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1400872487 - 2³⁰ = 327130663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400872481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551564 + ... + 554097.

It is an arithmetic number, because the mean of its divisors is an integer number (201230484).

Almost surely, 2^1400872487 is an apocalyptic number.

1400872487 is a deficient number, since it is larger than the sum of its proper divisors (208971385).

1400872487 is a wasteful number, since it uses less digits than its factorization.

1400872487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105849.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 1400872487 is about 37428.2311497618. The cubic root of 1400872487 is about 1118.9212846698.

The spelling of 1400872487 in words is "one billion, four hundred million, eight hundred seventy-two thousand, four hundred eighty-seven".