11401487 has 2 divisors, whose sum is σ = 11401488. Its totient is φ = 11401486.

The previous prime is 11401483. The next prime is 11401549. The reversal of 11401487 is 78410411.

It is a weak prime.

It is an emirp because it is prime and its reverse (78410411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11401487 - 2² = 11401483 is a prime.

It is a super-2 number, since 2×11401487² = 259987811622338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11401483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5700743 + 5700744.

It is an arithmetic number, because the mean of its divisors is an integer number (5700744).

Almost surely, 2^11401487 is an apocalyptic number.

11401487 is a deficient number, since it is larger than the sum of its proper divisors (1).

11401487 is an equidigital number, since it uses as much as digits as its factorization.

11401487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 11401487 is about 3376.6088017418. The cubic root of 11401487 is about 225.0714966202.

Adding to 11401487 its reverse (78410411), we get a palindrome (89811898).

The spelling of 11401487 in words is "eleven million, four hundred one thousand, four hundred eighty-seven".