1402447091 has 2 divisors, whose sum is σ = 1402447092. Its totient is φ = 1402447090.

The previous prime is 1402447061. The next prime is 1402447097. The reversal of 1402447091 is 1907442041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1402447091 - 2⁶ = 1402447027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1402447097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701223545 + 701223546.

It is an arithmetic number, because the mean of its divisors is an integer number (701223546).

Almost surely, 2^1402447091 is an apocalyptic number.

1402447091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402447091 is an equidigital number, since it uses as much as digits as its factorization.

1402447091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1402447091 is about 37449.2602196626. The cubic root of 1402447091 is about 1119.3403564125.

The spelling of 1402447091 in words is "one billion, four hundred two million, four hundred forty-seven thousand, ninety-one".