1400902457 has 2 divisors, whose sum is σ = 1400902458. Its totient is φ = 1400902456.

The previous prime is 1400902429. The next prime is 1400902483. The reversal of 1400902457 is 7542090041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974438656 + 426463801 = 31216^2 + 20651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400902457 - 2¹⁰ = 1400901433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1400902417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700451228 + 700451229.

It is an arithmetic number, because the mean of its divisors is an integer number (700451229).

Almost surely, 2^1400902457 is an apocalyptic number.

It is an amenable number.

1400902457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400902457 is an equidigital number, since it uses as much as digits as its factorization.

1400902457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1400902457 is about 37428.6315138558. The cubic root of 1400902457 is about 1118.9292639427.

Adding to 1400902457 its reverse (7542090041), we get a palindrome (8942992498).

The spelling of 1400902457 in words is "one billion, four hundred million, nine hundred two thousand, four hundred fifty-seven".